Top Ten Most Aggressive Dogs

July 15, 2008 · Print This Article

I think most of us would agree that dogs are not born aggressive, they are made that way by the environment in which they are raised.  However, there are some breeds that are more prone to aggresion than others.  The Daily Telegraph in Great Britain reports on a study published by Applied Animal Behavior Science, ranking 33 breeds of dogs according to their owners’ answers to behavioral questions.

10.  German Shepherd – I thought this one would be higher, because of their use in police work.

9.  Border Collie – I can see this.  They face off against sheep much larger than they are every day.

8.  English Springer Spaniel

7.  Beagle – This one surprised me.  My beagle demonstrates every submission posture known to man.

6.  Pit Bull – Popular legend has it that these dogs are the most aggressive, but I guess they really aren’t, if the study is on target.

5.  Australian Cattle Dog

4.  Akita – I had also heard these were dangerous dogs, like the pit bull.

3.  Jack Russell Terrier

2.  Chihuahua

1.  Dachshund – one in five owners reported that their dachshund had tried to bite strangers, and one in 12 reported that their dachshund had tried to bite them!

Tune in tomorrow to find out which dogs rank at the other end of the spectrum.

Comments

78 Responses to “Top Ten Most Aggressive Dogs”

  1. JoAnn C. on August 14th, 2008 6:49 am

    I can’t believe that the Beagle is on this list. Mine is about as aggressive as a door knob. I’ve always felt that they are one of the friendliest breeds around.

  2. Truman on November 6th, 2008 8:05 pm

    The issue is not with the breed of dog or the individual dog but how people approach, interact or train the dog that causes the dog to be aggressive.

  3. colin on November 17th, 2008 4:43 pm

    I’ve been raised with pittbulls my entire life and i would not put them on the top 25 list of aggressive breeds. they are extermely loyal and a great family dog. i will have to say though they have a very very high prey drive so small children should be watched very close while running around the dog. pitbulls were first used as hunting dog by the way.

  4. Jeremy on November 23rd, 2008 8:17 pm

    I must agree with the Jack Russell Terrier being on the list. My sister in law has a boxer that was attacked by a jack russell from two houses down. Her boxer had just had puppies and was lying on the front lawn, when the neighbors let out there jack russell it came down the street to do it’s buisness on her lawn and attacked her boxer while it was asleep.

  5. cynologist on December 9th, 2008 6:36 am

    dachshund!!!!!!! seriously|???? i have one dachshund which is supperrr friendly!!!! i believe that the big percent on why the dog is aggressive is because on how the owner would handle, train, and raise the dog. if the owner would only know how to responsibly raise up a puppy, then it will become the best dog on earth. my dachshund, her name is duchess, is so playful, and very protective and she is not acting in an aggressive manner.

  6. Brooke on December 12th, 2008 8:53 pm

    I grew up with a German Shepherd and he was the most gentle dog I have ever been around. Never aggressive. I also have an Akita and he is so sweet. We have a baby and 2 other children 5 and under and he is fantastic with them! They lay on top of him and put bows on his ears and he just lays there and lets them. Personally I think the smaller dogs are the more aggressive ones. My mom had a Yorkshire terrier (spelling?) and she tried to bite one of my girls when she was just 6 months old. We were standing right there and my baby never did anything to provoke her either. So.. in my opinion… small dogs are more aggressive and I get much more nervous with my kids around them than the bigger dogs.

  7. Amy on December 31st, 2008 9:14 am

    You are all forgetting that this is based on each breed as a whole and not individual dogs. As a dog trainer I have met some very nice dogs of every breed but there are always exceptions to each rule. Keep in mind that dogs in many senses are just like people… individuals! Don’t take it personally if your sweet pooch is on the list.

  8. The Dog Lady on December 31st, 2008 12:53 pm

    Amy – Couldn’t have said it better myself! Thanks.

  9. Pookie on January 17th, 2009 4:04 pm

    I KNEW IT!!! Little dogs are the spawn of Lucifer! I work at a kennel and the meanest dogs we get are chihuahuas and Jack Russells (or similar like Rat Terriers). I’ve also been attacked by a weiner dog at work but they tend to tee-tee instead of bite. But the most terrifying encounter I’ve EVER had with a dog in my entire life was with a Jack Russell. We kept this dog in a cage we’d normally keep big dogs in ’cause that supposedly would make it less aggressive since it’s 5′ tall instead of 2′, you know? Makes sense. And I’d forgotten this dog has hyper-aggressive tendencies and went in all calm like “Hey, little buddy. I see you don’t like other doggies much.” and open the cage and he jumps up, snarling, teeth bared and goes for my neck and face. Not arms or hands like a normal dog. I run out of the room screaming and slam the door. Our groomers heard this and run into the hall to find me half-laughing, half on the verge of tears. So the ballsy one goes in with two leashes and comes out after 30 seconds of chaos behind a closed door with the dog. One leash around his neck and the other around his muzzle like a, well, muzzle. So we go to take it outside and and we put him in a run but realize “Hm, how shall he get the leashes off” ’cause this dog is furious at this point. So I get a pooper-scooper rake and she uses the handle to try to get the leashes off and it dives, fangs bared, not for her arms or hands or the rake but, as with me, her face and throat. So she bolts and the dog is running rampant around the middle yard and all the other dogs in their runs are watching, amused I’m sure, as we try to catch this little Jack Russell or chase him into his run or something. Anything. So after 5 minutes of attempting to capture this little demon and having him not run away but run at us going for our throats and faces. Finally she grabs him mid-attack, one hand around his ever-struggling snout and one arm around his mid-section. Admittedly, this episode did not help his stress-level but there is absolutely nothing you can do for a dog like that. His owner’s friend (who always picks him up, or did since he’s no longer staying with us since this) said she has to do the same thing with him so we were relieved (as much as one can be) that it wasn’t only us. I feel bad for him in a way but I’m traumatized and hate Jack Russells to this day. After all, he’s not the only one ’cause then there’s Charlie…

  10. KKJ on March 8th, 2009 12:57 am

    great job lady. if you are even a female that is.
    There is no scientific evidence that every individual pup born of any of this breed is consistantly aggressive, let alone in the “top ten”
    How can you even consider yourself a dog person when you advocate that certain dogs are inherently aggressive? I suppose if it is not your breed, it is just another dog,huh? Ban them all.
    Omg, they squared off with a sheep!! They must be aggressive.
    Why don’t you try to write an article on something original and not something that you have read or been told, or better, seen on TV.
    I suppose the “Idiot who sputters in dog’s ears” is a hero to you as well.

    What exactly is your specialty in canines anyway? Are you a groomer, vet tech, or vet, dietician, behaviorist, doggie day care, walker, or trainer? Or do you just “love” dogs? No, obviously it could not be that. Anyone with a brain that really cares about dogs would know better than to write such idiotic articles such as this particular one, where you are almost begging people to fear these breeds and give them a sense of false knowledge on exactly what each breed is about. You do not have a clue as to what each breed is about because you have sheltered yourself, here, in your nice little corner, where you can be protected by safely deleteing anything that may counter what you have to say.
    Well, there are people and lots of them that know better than the bull crap you shovel and your ignorant pleas to be acknowledged behind a computer. All the while deleting anything that may be posted that would really show that you do not tell the real story, and certainly not the full story. If you are going to offer foods that are dangerous to dogs, why not offer all things dangerous to animals? the ASPCA offers a full list of these items. If you dont want to give them any credit, you can pretend you know it all and go to their site and copy and paste it.
    All of these breeds mentioned, I have had EXTENSIVE experience with and although aggression in a few individuals may have been shown, the entire breed should not be taken down with your miserable attempts to “educate”. And for your information. The breeds that did most often show aggression consistantly as a whole are not even mentioned in your list. You forgot to mention the all american “mutt’ Yes, they can be aggressive too.
    If you are going to attempt to show intelligence on a subject, at least do research it and study it for yourself. Good Lord, can’t anyone think for themselves anymore?

  11. tanya on March 8th, 2009 1:08 am

    Nothing is “prone” to aggression more than humans are.
    And if your beagle shows submission, that tells me that you are not a very respectful dog owner. Submission is not a good thing regardless of what Television tells you. Submission=Fear!
    Fear will eventually explode in some way and usually it is shown through some form of aggression. In a perfect world it would be the owner, because they caused the dog to be fearful to begin with, however, it is usually on someone else, and then what happens? The dog has to be put down. When the owner is the one who really should be put down.
    Regardless, as long as people keep using aversive methods when interacting with their dogs, they are going to create a time bomb. No matter what the breed is, using positive training methods in a consistent manner will produce a mentally healthy, confident, and loving companionship that is built on respect through trust, not fear.
    Remember, we are “supposed” to be the most intelligent animals on the earth. It is time we begin proving it.

  12. Julie Jones on March 8th, 2009 1:25 am

    Pookie wrote: “Hm, how shall he get the leashes off” ’cause this dog is furious at this point. So I get a pooper-scooper rake and she uses the handle to try to get the leashes off and it dives, fangs bared, not for her arms or hands or the rake but, as with me, her face and throat.

    Well, well, what a wonderful way to treat what is obviously already an extremely frightened, reactive dog. Yes, you taught that dog to be calm nicely.
    This is the reason I never put trust in any other person to care for the only beings I have ever known to offer nothing but “unconditional love”.
    So, the dog did not show any body language that would indicate that she was in some way fearful, or as you would call it, aggressive? If you work at a kennel you should research body language of the animals you work with. In my years of working with many species of animals, when an act of aggression occurred there was always a sign given before actually acting.
    Some people really have no business having animals, let alone work with them. especially when you are working with other people’s pets.
    There are people who claim to “love” animals and there are those who are indeed “animal people”. Not all animal people have animals or work with them, and in some cases, some animal lovers do not have animals.
    Human Ego can really get out of hand too. For some reason, there are those people who have no business having a maggot as a pet, yet here they are with all kinds of animals. They do not enjoy the animals except when they are given attention for having the animals.
    Honestly, it is not the breeds that should be banned at all. There really should be some sort of method to determine whether or not a person is fit to take an animal into their possesion. All of the things we have to have permits requiring certain qualifications and another living being is never considered.

  13. pitbull mommy on June 23rd, 2009 2:12 pm

    these studys are bull! ITS ALL ABOUT HOW YOU RAISE YOUR PUPPIES, JUST LIKE CHILDREN!! i have a pit and bichon and they love eachother to death.. when someone comes to my house my pit doesnt bark.. my bichon protests my pit and is the boss of the house..raise your dog righ and you wont have problems.

  14. Sheila on June 23rd, 2009 10:34 pm

    I believe it is half nature (genetics) and half nurture (the way they are raised). I myself have SEVERAL Jack Russells and never ever not one problem. Never been bit nor have they bit anyone else.

    I think proper breeding is where we will be able to turn all breeds around that have bad reputations.

    I have some great info and links if interested…

    Thanks, Sheila @ connemaraterrier.com

  15. Karen on July 10th, 2009 10:21 am

    Can someone help, we have a 9 month old boxer that we adore she is wonderful BUT her version of getting you to play is to bite your ankles and when you ignore that and turn your back and ignore her she goes after your arms, I have three children so obviously unacceptable. If you saw her she is not agressive we can take food, toys and anything away but we are at the point that we feel we will need to find a new home for her so definately heartbroken.
    Oh and we have tried dog trainers and non felt she is agressive.

    Please give advice

  16. Michelle Salyers on July 15th, 2009 8:00 pm

    Oh please, my Akita is a big lap dog and would’nt hurt a fly. He would only hurt someone if he felt his family was in danger.

  17. Liz on July 21st, 2009 5:00 pm

    I have a 3 years old Dachshund and she´s soo lovely.. so quite with people, really loves to be touched by people and kids.. I can´t believe that appears as number One in the list…

    I think that It depends of how you trained it. If you spent time with him or not, if you provide him love, fun and time!!!

  18. Catherine on July 27th, 2009 10:29 am

    Dachshunds #1?!? Pit Bulls #6? Give me a break. I’ve heard one story of a dachshund being so agressive that it caused a fatality, and in that case, the parents were being irresponsible, rarely do they ever cause need for stitches. I’ve owned dachhunds for years and yes, one of them even bit my daughter, while she was arguing with her boyfried, just breaking the skin, no stitches required. This dog was a rescue so I have no idea what her background was. My others have a tendency to be very protective but have never been aggressive unless they feel threatened. Even then they may snarl or growl but that’s it. If it came down to it, you could kick a dachshund off of you easily if it attacks. Not so with a Pit Bull who again, showed up in the news just a few days ago for mauling a little girl requiring dozens of stitches. Please be more realistic and responsible in relaying your information.

  19. calmassertiv on August 6th, 2009 9:20 am

    Little cute dogs tend to be owned by coddling owners who think it’s funny when fluffy gets aggressive and thus encourage/reinforce that behavior. Owners are always the problem when it comes to aggressive dogs, regardless of breed. If one breed does more biting than others it’s because owners who tolerate that behavior are more inclined to own that breed. Whatever breed passive submissive owners favor is the breed that most frequently will become dominant aggressive as a result.

  20. annoyed girl on October 27th, 2009 2:58 pm

    I AM NOT HAPPY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1 DACHSHUNDS?!?!”?!?!?! GET OUT OF HERE I HAVE HAD 7 DACHSHUNDS NONE OF WHICH THAT HAVE EVER BEEN AGGRESIVE TOWARDS ME OR MY CHILDREN, COLLIES, THATS ANOTHER JOKE THEY’RE THE MOST PATIENT DOGS I KNOW WITH PEOPLE!!!! THIS LIST IS ALL WRONG !

  21. dogs snarling on November 12th, 2009 8:25 pm

    Cocker spaniels are such handsome dogs with tremendous character. Glad to hear he is on the non-aggressive side…

  22. Candy Blakeslee, mom on November 24th, 2009 8:36 pm

    This list is quite interesting. I always heard that poodles were the number one biters. I believe Dachshunds…my dad’s bit him 50 times once. You just wonder who was more stubborn…my dad or the dog!

  23. Pete Jaskiewicz on November 26th, 2009 9:30 am

    There’s a lot of whining on the blog from owners who question the results of a legit study done at the University of Pennsylvania last year because their cute and fuzzy dog is on the list. Let’s be honest, just as in humans, one aggressive or non aggressive individual does not speak for the whole race. However, genetics and environment play a huge role in the final outcome of the psychological soup as an adult. Genetically predisposed hot tempered individuals will most likely be hot tempered as an adult unless major environmental factors affect the final product. Canine breeding and genetics is no different.

    The United States has several problems with our school of thought when it comes to breeding and owning dogs. We have allowed our materialism to override nature and now we breed for look or color instead of working ability. This has destroyed the quality of some of the breeds and introduced genetic defects that most likely would have been eliminated if we stuck to breeding the particular animal for it’s original intent and working ability. Canine on human aggression is a great example of a trait that can be influenced or eliminated due to breeding. The American Pit Bull Terrier was heavily culled for human aggression during the heyday of dog fighting due to the liability of having the dog engage the handlers or the referee which were present in the ring during the fight. Pit Bull on human bites were rare 70 years ago due to this culling. This has changed due to the current breed fad and the nefarious crowd it attracts. Now we have backyard breeders that are breeding young dogs that are genetically predisposed to human aggression so they can sell “The Baddest Dog” on the block. Most of the pups will find their way into the hands of irresponsible owners and now you have a recipe for disaster.

    For the potential dog owner looking to buy a puppy, LOOK and INTERACT with the parents. If the breeder cannot let you interact with both parents, and the breed is not one that is supposed to be aloof, suspicious and guardy, I would walk away and find another breeder. A proper German Shepherd should be somewhat suspicious of strangers and aloof. Knowing this, if you own one or are planning on owning one, socialize early to minimize this. Otherwise prevent your dog from failure, stop anthropomorphisizing by forcing your dog against its genetic predisposition to be friends with everyone. Realize that your particular breed may have been bred to guard, so respect what your dog was bred for and treat your dog as a dog.

  24. KB on November 29th, 2009 8:16 am

    Yes, let’s all get scared of these dogs. In fact, I think I heard about a Dachshund holding up a gas station and firing several shots. By all means, get all excited about the “dangerous” Dachshunds and Chihuahuas in the world. Before we mandate having to get permits for owning a dog, how about having to get one before you have a human child?

  25. nathan on November 29th, 2009 10:54 pm

    pit bull number 6 fuck yeah and eff anyone whu say pitty is a bad breed of dog or a bad dog to buy because of aggression i own i a Chihuahua and he bit my uncles pitbull in the face and the other dog just wanted to play so it just goes to say there not a bad dog or breed of dog its just a bad owner lol… unless you own a chihuahua

  26. bryan on December 13th, 2009 12:21 pm

    i have had pitts all my life and never had one to ever try to bite me i also have too kids that hug all over them its all how they are raised so whoever thinks negitive about pitts are fucking retarded

  27. Carley on December 15th, 2009 9:44 am

    I think dachshunds, pitbull, and border collies should be on this list.
    I’m kinda surprised a rottie isn’t on it.

    My grandma had dachshunds, and from the stories I heard they were nasty.
    Wouldn’t let you touch it’s toys or food.
    And I once met a lady with a dachshund who said he was really aggressive.

    I’m sure not all, but all the ones I’ve met/heard of sound terrible.

    Pitbulls are always in the paper or TV about being aggressive.
    This summer my boyfriends cousins dog ate their cat, and yes it was a put bull.

    And border collies, I go to fly ball tournaments with my Shepherd.
    They’re always getting aggresive around other dogs.

    I’m sure that it’s not all dogs.
    and I’m deff sure there are some aggresive GSDs.

    I’m just saying, it doens’t sound too far off.

    Other the beagle, I’ve never heard of an aggresive beagle.

  28. Pookie on December 15th, 2009 8:23 pm

    thetruthaboutpitbulls.com
    Educate yourselves, Pit haters!! And stop being IGNORANT.

  29. Candy Blakeslee, mom on December 16th, 2009 11:15 am

    The difference between a Pitt Bull and other dogs…is their jaw strength!

    Some of the sweetest dogs I’ve met have been Pit Bulls. However, when we lived near the edge of Phoenix…we rescued about one dog a month (they were dumped in the desert). They were all Pit Bulls — which is a comment about their owners and not the dogs!

    I do not think Pit Bulls should be banned. However, I do think if you own any of the dogs on this aggressive list…you have a higher responsibility to keep them, and people who come in contact with them, safe.

    Actually, any dog will bite under the WRONG circumstance!

  30. matt mcginty on December 20th, 2009 10:18 am

    http://www.youtube.com/watch?v=wlHrWvyy5Rk , watch this jack russel attack a ten stone rotti lol

  31. KIM on January 18th, 2010 6:29 pm

    I have a pitt bull and i had an akita and my akita was very dangerious. I will never own one again. Now my piibull shes so sweet i just bought 2 american bulldogs puppies and she loves them. So people who say pitbulls are mean they are wrong……. its the idiots in this world who make them what they are.

  32. Junnie on January 24th, 2010 6:58 pm

    Karen,
    There is a way to help your dog become a friend of you and your children.I am a firm believer of going back to the basics.
    When something new doesn’t work then go back and start over. Old dogs can learn new tricks .
    Listen I have worked with some of the most aggressive dogs.
    And this one just doesn’t know any better.
    I would say when it was a puppy the biting at the ankles was a cute thing, and it wasn’t stopped as a puppy.
    Now it is a bad thing.
    To make a long story short try this.
    Take sometime to teach your dog the meaning of NO!!!!
    Start out with a piece of food on your coffee table .Every time he reaches for it the word is NO!!! BUT, have a collar and leash on the dog.
    Be sure to pull away gently before he gets the food.
    Every time saying NO then after a few times of saying NO let him make his own decision of not getting the food off the table.Say NO but do not pull on the leash. If this doesn’t work and he gets the food start over until he gets the No !!idea. Once that is accomplished put the food on the floor and do the same thing.
    Once he gets the word. No down. Then leave the leash on him and have someone pull on it when he goes to bit at the ankles and keep it up until he stops. Always using the word NO . Dogs do not understand sentences, but they will respond to 1 word. NO ,once they learn what it is.
    What do you have to lose ? Just your dog for not trying.
    Thanks

    Yes it is going to take some time, and it is a repeating procedure but it will work .

  33. Eric on February 23rd, 2010 7:42 pm

    OMG Dachshund is the #1 most aggressive dog?….. I hereby from this day forward will never believe any sort of statistics whatsoever.

    I have two of them, one male one female and they would kill yo uwith cuteness.

    It’s the owner….you have to nip it in the butt as soon as they show any sign of snappiness…. Most do not train the dog and the result is one of the most innocent puppies in the world getting the #1 spot of the most aggressive dog breeds.

    Wow..what a joke lol.

  34. Lee M on February 26th, 2010 6:26 pm

    In our extended family, we have 4 of these dogs. We get together once a month and have seen no aggression. The dachshund had fear agression when she was dropped off on our street. With a little work she is a sweetheart. The Australian Cattle Dog is the biggest baby of them all and even loves cats. We are volunteer for Springer Spaniel Rescue and have had 50 different ones in our house from time to time. Only ONE showed any agression and that was toward other dogs. It took us months but she is wonderful. Now the Jack, he LOVES LOVES people especially babies (they drop food). He has never snapped or bit another dog or person but he does grumble a lot and low growl when he does not like something. After 13 years with only a low growl to complain, he is the love of our life and the growling has become a joke. So I personally do not understand this list.

  35. Mia on March 14th, 2010 7:04 am

    Your dog may not be a statistic, but that’s no reason to NOT believe in statistics.

    Statistics used to ban dogs are stupid stupid stupid, but they should be used as a tool for the individual owner. “Statistics mean nothing to the individual” is a true statement, but it means that the individual comprises the statistic, so the individual is implicitly significant to the statistic.

    Statistics don’t make a breed bad or another breed good. All statistics do is show likelihood of something to happen. It’s a prediction, it’s just a caution sign.

    Look at it this way, let’s humanize it this way; I’m Filipino and statistically more prone to get breast cancer. That doesn’t mean that I definitively will get breast cancer, but armned with that nugget of information, if I have a tiny little something that I’m not even sure is a really a lump, I’m going to get it checked out.

    That being said, just because you belong to a race that is statistically less predisposed to breast cancer, doesn’t mean that you shouldn’t check for lumps and go to the doctor if you find one.

    The same is true for aggression. Statistics are based on facts and numbers, but they aren’t the same as fact. They are just the likelihood that something will happen.

    I own two Rottweilers, and I’m actually not surprised that they’re not on the top ten of the list. It’s not because I’m biased, it’s because Rottweilers WERE the statistically aggressive dog many years ago.

    Because they were statistically more inclined to be aggressive, Rottweiler owners (the ones who honestly loved their dogs, anyway) would see the tiniest sign of aggression and correct it.

    If my dogs were to so much as growl at anyone or anything, I would in no way tolerate it, the behavior would be corrected IMMEDIATELY. I am more aware of any signs aggression because, yes, they are very large, and yes, if the were to even nip someone, it would probably require stitches. Every moment of every day I am aware that Rottweilers have in the past caused injury to other dogs and humans and at statistically high numbers. I am aware of this, but it doesn’t mean I love Rottweilers any less. I do my damnedest to make sure that they don’t prove the statistic.

    Just because you love a breed of dog on the list, doesn’t make the numbers not true.

    To the woman who’s dog bit her daughter; are you delusional?! Your dog big your daughter, a member of it’s own “pack.” That is aggression. Aggression isn’t measured by damage, it’s measured by aggression. This is why Dachshunds are so high on the list; people like you ignore growling and aggression and say, well he can’t hurt anyone anyway. Just because your daughter wasn’t seriously hurt DOES NOT make your dog any less aggressive and I hope you were at least smart enough to get a good behaviorlist to work with your highly aggressive dog.

    Extent of injury, however, does not measure aggression. I have sprained an ankle because of a Great Dane at the dog park I frequent. Did it hurt? Hell yeah. Just because it required a hospital visit is it aggression? A resounding “NO.” The dog simply ran into me while playing with another dog.
    If someone points a gun at another persons head thinking the gun is loaded with real bullets, does the fact that the gun is loaded with blanks make the act any less aggressive? NO. The damage is less, but the act is just as heinous.

    I’ve heard one of my cousins, bless her heart, say that she had no idea her Yorkie would bite after it had bitten someone (a well-behaved kid that my dogs love). “They’re just so sweet! All he ever did was growl a little when we tried to take his favorite bone, but it was his favorite, and that’s nothing. He likes to chase our big dog, it’s so cute the way they play together, he growls and the bigger dog rolls over! So cute!” Well wake up and smell the chicharones! You had indicators! It’s little and cute, it’s not known to be an aggressive breed, but those are what we call signs of aggression.

    The only thing statistics help do is pick out trends within a population. In the UPenn study, it’s the sample size of the breed within the study. The whole number of dogs has no bearing on the outcome of the percentage of aggression, they’re comparing apples to apples.

    All dog owners should be AWARE of any aggressive behaviors and shouldn’t tolerate the behaviors and correct it immediately. Nothing bothers me more than people saying that their breed of dog could NEVER be aggressive, the study is wrong, blahblahblah. Once again, “Statistics mean nothing to the individual.” Just because your breed of dog is not considered aggressive, DOES NOT MEAN THAT IT WILL NOT BE.

    So to sum it up, to all the dog owners saying “the list is wrong,” shut up, stop being an idiot about your dog that can’t comprehend scientific information done by a prestigious and reputible university and be HAPPY that you didn’t contribute to the statistics. You’re a good dog owner, freaking CONGRATULATIONS.

  36. Mary Pierce on March 25th, 2010 11:21 pm

    I have 7 pitbulls never had a problem with them, they are loving, loyal and they are all very spoiled! I used to have a rottweiler too but she died, never got into a fight or anything they’re like children is all about bringing them up with lots of love and not abuse them. I live in MS and there’s a county where they want to ban pits, it’s very sad because responsible pet owners like myself have to pay for people that fight and abuse them!

  37. jason wiggins on April 6th, 2010 7:29 pm

    Alright folks here’s the skinny on dogs. Breed has absolutely no part in how aggressive a dog is. It’s the person that raises the dog. If they are raised around yelling or fighting, if they are raised t fight, or are abused they tend to be more aggressive. I have raised all types of dogs but I have noticed a more natural tendency for smaller dogs to show aggression. If I were to put a dog first on the list I would have to say poodles. Pit bulls have this notorious reputation for being mean and hurting people, but again it’s the people that raise them. Just because a dog looks mean does not mean it is…I dislike people that have these preconceived notions about things that they have absolutely no knowledge on…it’s embarrassing for the human race for people to talk for a lack of better words “out of their butts” based on hear-say. I have trained blues, reds and brindles and they are complete sissies and lap dogs. Only showing signs of aggression when someone enters the yard without us being present. So check your facts before posting something.

  38. Nikki Johnson on April 6th, 2010 9:10 pm

    I am a dog groomer, rescue worker, & trainer, so needless to say I am inbedded in the dog world 24/7. I think it’s so funny that most ‘studies’ never show small dogs on their lists when they are 10x more likely to bite people than any large breed. This is because people dont train their minis to respect people. Also people don’t think or talk much about springer rage. Springer spaniels can snap when they get over the age of 5yrs. It’s an actual medical condition due to bad breeding & is a serious issue since it doesn’t happen just after a tramatic event like most pitbull attacks. I can not tell you how many pits I have taught to love people/dogs who learned to love simply by having someone tell them to respect people rather than jump on them & run up to them at the door. It’s amazing to me that people try to pick up my min pin who is more than happy to rip a hole through your face, but start walking away very fast when my pitbull comes up & sits behind their legs waiting to be pet. Funny how people create monsters from lovers.

  39. I love pitbulls on April 12th, 2010 12:46 pm

    I have to say that people are stupid!!! Yes a Pitbull can bite….what dog cant they all have teeth…as far as letting them near small children…mine has been around my baby sister who is now 2 and has NEVER bitten her!! You raise any dog right and they will be a great companion. Teach them from the start and you wont have a problem. Pitbulls reputation is so horrible, yet the people running their mouths off about them i guarantee havent done any research on them!! The pitbull was the most decorated dog in military history and the ONLY dog to have been promoted during battle!! The Pit was the image used on various war posters, representing the countrys STRENGHT AND DIGNITY in the 1900s. Instead of blaming the breed, blame the people responsible for creating the dog to be mean. THE OWNERS!!! I am doing a research paper on Pitbulls’ Reputation and the things I have found that the owners do to these dogs to create them to be mean is SICK!!!! They feeed them gunpowder, starve them for days and weeks, throw them in a cage with another pit to fight to their death and if they don’t die in battle and they lose, THE OWNERS KILL THEM they have reports of people grouping up and dropping cars on the losing dogs head, lighting them on fire while their STILL ALIVE!!! Those are the ones who need to be punished not the dogs!!!!!! STOP CLAIMING THEM TO BE MEAN AND EVIL!!! their wonderful dogs!!! BLAME THE DEED NOT THE BREED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! and if u have problems or doubts about what i said u can email me at anytime pissed_blonde@yahoo.com

  40. I love pitbulls on April 12th, 2010 12:54 pm

    and people pay WAY too much attention to the news! Come on u really think they put everything that happens in the paper?? Yes pits make the paper all the time, because of the attention it causes!!! A bus drive was jus sliced open the other day…never made it to the paper!! They pick and choose what to put in the paper!! Come on what kind of attention is the paper gonna get putting “Chihuaua mauls little girl” seriously….get a clue and stop listening so much to the media!!! Think of all the things they aren’t putting in the papers!!

  41. marifromsyc on April 12th, 2010 2:45 pm

    “Aggression” is such a general term. It can be used to describe so many behaviors, from so many causes: fear, resource guarding, poor socialization, etc. What does a list like this even mean? What was the criteria? I would assume that it would have something to do with dog bites or attacks. I believe that similar lists show that the Golden Retriever was responsible for more dog bites than any other breed in the US. Yet it doesn’t appear on this list.

    However, though I don’t agree that they are the “Spawn of Satan” I do believe, however, that smaller dogs tend to have more aggressive behavior than larger breeds. I think it’s because they tend to be coddled more and their bad behavior is generally excused by overindulgent owners. JMO, of course.

  42. randomguy on April 24th, 2010 10:20 pm

    my friend has an akita (bacchus) and i wouldn’t say that they are the most aggressive but more like the most dangerous. For instance Bacchus got in a fight at the beach last week with 3 pitbulls amazingly Bacchus barely had a scratch on him but the 3 pit bulls on the other-hand needed medical attention.

  43. Eddy on April 29th, 2010 1:43 pm

    Nobody talked about the Caucasian????

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  45. Michelle on May 11th, 2010 8:00 am

    I THINK THIS STUPID I OWN A DASHOUND AND SHE IS SOO NOT AGRESSIVE. I FEEL OWNERS MAKE THEIR DOGS AGGRESSIVE SO PITBULLS ARE GIVEN A BAD NAME I OWNED ONE OF THEM TOO AND SHE WAS HARMLESS TO ME AND STRANGERS. I REALLY WISH PEOPLE WOULD WATCH ANIMAL PLANET THEY WOULD GET A BETTER IDEA ABOUT DOGS DO YOUR RESEARCH PEOPLE I AM IN VET SCHOOL SO PLEASE GET EDUCATED…

  46. launie on June 28th, 2010 11:11 am

    i can not believe german shepards are on the list! i have grown up with german shepards all my life and not one has thought about biting anyone. the only reason a german shepard would bite someone is if the owners didnt raise the dog right or if the dog felt its people were in danger.

  47. Tracy on July 9th, 2010 4:26 pm

    My sister and I each have an Akita which are brother and sister. They couldn’t be the two nicer dogs, ever. I have had nothing but compliments on my 65 pound female’s behavior! My sister’s 150 pound male (mine was the runt of the litter. Her’s is an absolute moose!), he is a huge teddy bear! I truly believe ANY dog can be trainable, but it must start as a puppy. Our dogs are extremely loving, very socialized, family dogs. Yes, we each have children. These dogs are the most tolerant animals you have ever seen. Any pet owner should be aware that they should research their animal before getting one, regardless of what the breed is. We were aware of the temperament and behavior issues of our breed, before we actually got our dog. Of course, getting her from a breeder who had the parents, etc. also helped, as we could see who we were actually getting our pup from, and how the parents dispositions were too. All I can say is my Maddie is the best dog I have ever had! And BTW, my brother has had a Pit Bull for 7 years-a bigger people dog you won’t find! She loves EVERYONE!!!! It’s all about the training, people!!!

  48. Alan on July 10th, 2010 10:57 am

    Jack Russels? All dogs can be trained to “Not attack” other dogs providing they’re socialised early on. Unfortunately me and my wife could not get this done so he is aggressive towards some dogs . . . . . . . . .
    As for people, 100% no way. In the words of my vet “He’s biggest Jack Russell I have ever seen” however he’s as gentle as a feather duster and at the end of July I will be bringing home my son and I have no doubts what so ever !!!!

    What a joke . . . . . . .

  49. Barb on July 21st, 2010 8:10 pm

    Agressive and dangeous are two dofferent things. I believe , since all dogs (except the chihuaua)are decendants of the wolf, that the primal agressive/dangerous gene can show up by the pure genetics of inheritance. Many small dogs can act aggressively because of how they are handled and trained by their owners, and also out of fear of larger creatures..canine and human. However, danger is involved when a breed is aggressive AND capable of inflicting damage due to its size, strength, and style of playing, hunting or attacking. Everyone must realize that any dog can become violent and we should do all we can to socialize them and be responsible and aware of their behaviors.

  50. bethany on July 23rd, 2010 4:26 pm

    dogs can be agrrsive,but if you train them REALLY good you can teach them not to,its also the way we bred them,like the pit bull most people have been breeding them as fighting dogs,but you CAN train them not to be agrresive.i have a havanese and she isnt aggresive to anything thing,because i trained her,and i raised her really well,it also depend on how you raise it,if you hurt the dog it will fear you,them bit you.or if you fight the dog,then the dog will not like the other dog hurting it,and bit,then it will think all dogs will hurt him,so it will bit at any.

  51. Jill Blanton on July 27th, 2010 2:45 pm

    I have only been bit by a dog once and it was a dachshund, and my daughter was also bit by one. We were both in our own yards when the owners of the dogs brought their dogs off leash and they ran out of their yard into mine and bit me on my ankle and bit my daughter on the thigh. There was no provoking or anything just walked right up and bit for no reason. I don;t like those little dogs. I have a great big golden retirever that loves everyone.

  52. Candy on August 8th, 2010 5:57 pm

    I love my Pit, she is so sweet and loving. She will lick you to death if she knows you, and it doesnt take much for you to be her friend, a little pat on the head and she is your new best friend. We got Taz just before my dauughter turned 1. My daughter lays on Taz, she pulls her ears, and tail. She also trys to poke out her eyes. But Taz just lays there and lets her what ever she wants to do, and when Taz gets tired of my daughter messing with her she just walks away. So who ever says that Pitbulls should not be around small children, I say you should have your brain checked. Its not the breed, its the way the dog is raised.
    If you want to talk about an aggressive dog why dont you go play with a Pomeranian, those little ankle bitters are mean.

  53. Beckz on August 28th, 2010 9:36 am

    Theres a few dogs that shouldn’t be in this list. And i cant see rottweilers in this list, whoever created this list doesn’t watch the news and how many deaths are caused by Pitbulls and rottweilers. Pitbulls should be 1st on the list. chihuahuas and Beagles shouldn’t be on the list. Have they ever killed someone? i know you say these dogs bite but they CAN be controlled. Anyone who has owned a small dog and called them aggressive must have raised them badly!

  54. Debbie Ippolito on September 27th, 2010 9:08 am

    No dog is born aggressive. Some breeds have more curios nature when approached by other dogs or some people who do not know enough to be “alpha” around dogs. I personally have raised almost every breed mentiioned with the exception of the pit bull and if treated with lots of love and respect, they are wonderful pets.

    I raise Boston Terriers and as loving and playful and friendly as they are, they could me made aggressive, given the right circumstances.

    I think the trick is to stay away from strange dogs and protect your own pets when other dogs are present.

  55. Aggressive Dog Remedy on October 9th, 2010 12:46 pm

    The best way I found to deal with Aggressive dog is homeopathic treatments and a lot of discipline.

  56. cat lover on October 12th, 2010 1:12 pm

    I smoke and I’m perfectly healthy. Therefore all studies and statistics saying smoking is bad for your health must be sooo wrong (A lot of people here seem to reason this way, so i thaught i’d have a go at it too).

  57. Kari on October 24th, 2010 7:29 pm

    I have had dascunds and fully agree with their number one rating, however, I also have crossed over to the realm of rescuing dogs and, therefore, have had pit bulls for the last ten years. My pit bulls get a bad rap. They are the best dogs in the whole world. The only aggression is towards other dogs and when strangers get near my children. They have never snapped but they will let you know they don’t like you near their loved ones. It is sad that bad people can give dogs such a title. It really is their treatment that effects their behavior.

  58. Kari on October 24th, 2010 7:34 pm

    as I am reading these I would also like to mention that my pit bull that is aggressive towards other dogs was attacked by two loose dogs running in the neighborhood and she was hurt badly. She hasn’t been the same towards other dogs since, but is still loving towards people once I tell her that they are friends.

  59. Cosmo on November 3rd, 2010 7:14 pm

    Thank you for this article. I love pittbulls and Im glad that its out that they arent the most agressive. keep on spreadin the word, it’ll save lives of larger dogs; weiner dogs are tooooo cute so no matter what theyll be popular but pitties need the protection…

  60. Debbie on November 9th, 2010 2:38 pm

    I also have a dachshund, I adore him. We got Max when he was 3 months old., he is now 2. At first he was sweet and a normal fun loving puppy. Then he started to growl at people that came to visit. We started putting him upstairs whenever we had company over. He would bark his little head off, I felt really bad for him, but it seem like the best solution at the time. It just made him more and more aggressive. I decided to get him one of those rawhide bones, so he would have something to occupy his time when he was in “timeout”. Big mistake, when I went to pick him up and put him on my bed, I didn’t realize he still had the bone in his mouth..needless to say I went to the hospital and received 5 stitches in my wrist.
    I studied a little more on dog training after that, any book I could get my hands on, and all of them said not to isolate your dog from others, so we started putting him in his harness with a leash whenever someone comes over until he gets used to them.. it has made a world of difference.
    My point is, I was totally in the dark about raising dogs, you have to be in command at all times are they will try to be the alpha and take over your role.
    Oh and he has not been giving rawhide treats since..lol.

  61. Debbie on November 9th, 2010 2:40 pm

    * or they will try to be the alpha. (not are they will try to the alpha.)

  62. Alison on December 12th, 2010 9:10 pm

    Dear Beckz, and etc. you clearly can’t grasp the concept of “aggression” and “deadly” not being a synonym. I own a pit bull, he is not aggressive. If he chose to attack me, there’s a good chance I would die. I have had this dog since he was six weeks old, and he has never been aggressive with any other dogs, under any circumstances. I can take his toys away, I can take his bowl away while he is eating, I could stick my hand in his mouth and he would not bite down. I have an acquaintance that had a pitbull that bit someone and had to be put down. What do these two dogs have in common-their breed. I’m a human. So was Ted Bundy. I have the capacity to terrorize sorority girls, however, I’ve been raised to not make that a priority.
    I think a common misconception arises from people and the media labeling mixed-breeds who have some pitbull features as ‘pitbulls’. pitbull terrorizing neighborhood sounds much more sensational than mutt terrorizing neighborhood. My brother’s wife owns a dog who has pit characteristics but when compared with my dog actually looks much more like a boxer/american bulldog mix.
    Has anyone you know ever been bit by a pitbull? Not a lookalike, a pitbull. And YOU, not some story you heard on the news. Has anyone you know ever been bitten by a small dog? The chances are more likely that you’ve been threatened by a smaller dog (i.e. aggression) even if you weren’t keen enough to realize that the cute ball of fur was displaying aggression.
    I don’t understand why people are having such a hard time accepting that their breed is on the list. My family is predisposed to cancer, so that means that I may get cancer. But if I never do….ok. This is predisposition, not set-in-stone rules. An ex of mine had a dachshund. They’re wonderful dogs, I’m sure yours is too. Sometimes some of them act aggressively. Hopefully we can demonize them as psychokillers and pass laws to ban them from cities a la pitbulls.
    As I’ve said before, this study is over “aggression” which I assume the questions they asked were over many displays of aggression, not just biting.
    Thankfully, I was relieved to see that most people responding to this were levelheaded and intelligent enough to realize that the results of this broad study should be taken with a grain of salt of your breed is mentioned.

  63. Michelle Hunderacer on December 17th, 2010 11:12 am

    I remember once seing a study where they believed that parts of the larger aggression in the Dachshund where caused by the dogs often having pain in their backs. Unfortunately I dont remember where I read those results, but I think it seems plausible. Its not a secret that lots of Dachshund ends up with back problems at some time in their life – and pain can make every breed aggressive :-)

  64. Patricia Schaefer on December 31st, 2010 10:13 pm

    It all depends on how the dog is raised. A strong owner can teach a dog anything including non aggression.

  65. megan on April 16th, 2011 7:09 pm

    Hey I happen to <3 chow chows soooo very much they r not that mean

  66. Debbie on July 13th, 2011 7:25 am

    Regardless of the list, it is how they are treated from the time they are born. I have 2 Bostons and have had bostons my whole life and people are afraid of them. They can be agressive if played with rough or teased. LIke children, raise them correctly with discipline and love and they will respond accordingly. Any breed can be agressive if pushed, regardless. Just love them and train them and nothing is more satisfying than the unconditioinal love they return.

  67. mobile dog grooming on July 15th, 2011 4:11 pm

    HEY .the real true is NOT AGGRESSIVE DOG in this word is all depend how do you teach it !!! dog is only love !!!Mobile Dog Grooming Miami

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  69. Dayton Stelly on October 6th, 2011 11:26 pm

    Yep. There’s an exception to every rule. Dogs, of any breed, raised correctly (or lovingly) will not behave in an aggressive manner. Still, our government has seen fit to punish the breed instead of the owner. By this, I refer to unfair laws against the pitbull and other large dogs, such as the Doberman, the Shepard, the Mastiff, etc. If a black man attacks someone, should all blacks be punished? If a white man attacks someone, should all whites be punished? Seems kinda stupid to me that I can’t even get Homeowners insurance because I choose to keep a pit bull. It is disturbing to me that here in the state of Florida, Pit bulls picked up by animal control are immediately put down with no chance at adoption, regardless of whether or not that animal attacked someone. Where is a dog’s civil rights?

  70. Kim Minor on October 25th, 2011 11:04 pm

    Omg… wow so awesome to see someone backing up Pit Bulls I don’t care wat no one says if they are number meanest, they have been number best dogs in my house hold for 18years… I WILL NOT own any other dog. Zues, Xena and Thor are my babies… oh yea I forgot I have a 8year little girl also she her self have been raise from day one with many many pits. I get them from the pound any chance I get an find them good homes. Seeing a pit bull get put down FOR NO REASON kills me. Even if the dog has bit someone ask your self Why did it bite?? Look at the raising of the dog.. see if its full blooded. See how they treat it. There’s lots of things that need to be looked into but are they?? NO!!!!! Cause u know why? They are PIT BULLS. So the kill them… what a sick world welive in.. these dogs have a right to live also. They are trying to tell us that when some of them do attack.. they could be saying this… They don’t feed me… they beat on me for no reason… but does anyone thing about that? No!!!! HATE THE DEED… NOT THE BREED… I’m done before I get mad… thank for reading… own one b4 knoking down on one. THANKS

  71. Julie on November 28th, 2011 7:05 pm

    I’m surprised Chows arent on the list. I’ve never met a friendly chow and any one I talk to says they are a nasty breed

  72. toni on December 13th, 2011 10:06 pm

    my sisters j.russel was very agressive. my niece had one too same thing. i agree about the pit bulls. anything with bull dog in it is labeled pitbull. it could be any combination of breeds but its a pit bull attach. pit bulls are breed to be good with people. they are not always good with other animals. just depends if they have been raised with other animals.

  73. Andrea terpe on February 20th, 2012 8:07 pm

    I am sorry my son who is a chihuahua and his name is phillie and he is the sweetest dog around and as for my niece named Chloe who is also a chihuahua. I say they are the sweetest dogs around. My sister had an Akita named lucky and he was the sweetest dog too, he passed away last year and is truly missed.

  74. Rocco on April 27th, 2012 10:36 pm

    The article states Dachshund – one in five owners reported that their dachshund had tried to bite strangers, and one in 12 reported that their dachshund had tried to bite them!

    The dog only TRYED to bite them or TRIED to bite strangers.
    Pit Bulls do alot more then try to bite. They lock on and do massive damage
    It is called an attack NOT a bite.
    The breed (Pit Bull) need to be eliminated from the planet.
    Nobody wants them, try to rent a place with one.

  75. Selena on May 1st, 2012 12:48 pm

    you would think that the daschhound is more aggressive than the chihuaha beacause chihauhas cant really do anything except bite at your ankles i mean even my cat could tear those things apart they are just so annoying.

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  78. Kim on December 15th, 2012 4:06 pm

    I have a Doxle (Doxie/Beagle mix) and she is the calmest, most submissive dog in the world. She loves babies and children with special needs. She loves to cuddle. She loves people and has only growled at maintenance men. She also loves Marines (we live on a military base, haha.) We literally get stopped everywhere we go because people think she’s so cute. She’s also extremely intelligent. I’m surprised both Doxie and Beagle are on this list, but she’s the best dog I’ve ever met.

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