Dog aggression not dependent on breed.
by Maria Mooney
Categories: Animals, Causes.

Which dog breed has the tendency to display the most aggression? The pit bull terrier? The Rottweiler? The answer may not be what you think.

Recent research in the journal “Applied Animal Behaviour Science” suggests that age of the owner, the training the dog has received, the place the dog was obtained and the gender of the dog may be better predictors of the potential for aggressive behavior than the actual breed. Furthermore, an aggressive dog may not be aggressive in all situations. Just like human beings, dogs may display aggressive behaviors in certain circumstances but not in others.

Stephen Zawistowski, science adviser to the American Society for the Prevention of Cruelty to Animals (ASPCA), said, “Aggression is incredibly complex. It’s going to be both situation-dependent and dependent on the history of both the people and the dog. You can’t just pick the breed of the dog and say somehow that will be predictive of whether the dog will be aggressive.” We’ve all heard the myth that pit bulls are dangerous and aggressive dogs, and this myth has culminated in several cities banning the misunderstood breed.

The researchers found that the majority of aggression was toward strangers and not toward family members. “The origin of the dog was a significant factor in aggression toward family members. There was a 2.6 times increased risk in dogs obtained from rescue centers, and a 1.8 times increased risk from a combined category of ‘other’ sources, including pet shops and Internet sites, as compared to those obtained directly from breeders.” said Mary Burch, Canine Good Citizen director for the American Kennel Club.

Most aggression is a result of fear and anxiety, so socializing your dog could decrease the likelihood for aggressive actions. If an older dog suddenly becomes aggressive, pain or discomfort is likely to be the cause. Researchers also caution against the assumption that barking is always a sign of possible aggression and suggests that individuals be aware of other “pre-agression” signs, such as a direct stare, stiff posture, hackles up, ears or lips pulled back, baring teeth, growling, lunging and snapping.

This is great news for breeds like the pit bull, and we hope the elimination of breed specific legislation around the country will reflect these newfound discoveries.

Photo Credit: Shutterstock


About Maria Mooney

Maria Mooney, MSW, LSW, is a raw vegan licensed social worker, certified holistic health coach, research and editorial assistant at and freelance writer. After years of suffering with chronic health conditions, she is healing herself through a plant-based diet, radical self-care and consuming self love, and she wants to teach you how to do the same. She has done it all, including the Gerson Therapy and Hippocrates Health Institute's Life Transformation program. She knows how to make delicious juices, grow wheat grass, sprout anything and everything, create mouth-watering, healthy treats, grow shoots and more! She is also licensed in the mental health field and loves to marry mental health healing with physical healing to teach her clients to be themselves, love themselves and heal themselves. Contact her at for a free health consultation today!

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