Dog Breeds

By BarkUpToday

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Does your cute and cuddly Dachshund sometimes act aggressively? According to a new and ongoing study by a renowned animal behaviorist, author, and founder of the C-BARQ test, Dr. James Serpell, University of Pennsylvania, Center for Interaction of Animals & Society, says there’s a lot more to a dog breed than you may think. According to a video and article from PRI Science Friday with Ira Flatow, Dr.Serpell says, “There is no other breed or species of animal with such a wide variety of appearance and behavior.”

The article starts by stating that this is one of the most extensive studies involving more than 80,000 individual dogs; Dr. Serpell points out that there’s plenty of variation among any given breed, most especially when it relates to aggression. What’s most interesting is that this study demonstrates how our dogs watch us and how our behavior affects how our dogs behave, even when we’re not giving our dogs any direct signals!

“Dogs perceive signals from us that we’re not even aware we’re giving. Little attributes of personality that we may have, probably change the way they typically behave. It’s unendingly interesting to me.” –Dr. James Serpell

According to the video from PRI Science Friday with Ira Flatow, Dr. Serpell says, “The fundamental purpose of dogs now is to provide people with companionship. This started around 33,000 years ago when man wanted companionship from dogs. In the early days, dogs were used for hunting and guarding. With the change that occurred by the mid-19th century, dog owners wanted to breed for aesthetic purposes and started showing their dogs.

Many of these breeds still show those original behavioral predispositions to do particular things.” Dr.Serpell says that dogs are judged on their behavior using stereotypical references based on their breed-specific traits at big dog shows like the Westminster Kennel Club Show. For example, Beagles are known to be pack dogs used for hunting, terriers are known for being a breed that enjoys digging and searching for rodents, the Border Collie renowned for herding sheep.


What is the C-BARQ?


  • It is one of 5 survey sections in the Animal Ownership Interaction Study that will continue for the next two years to find out more about what influences the canine-human behavioral bond.
  • C-Barq helps you to understand your dog’s temperament and quirks so much better.
  • Researchers from the University of Pennsylvania at the Center for the Interaction of Animals and Society developed this test.
  • The C-BARQ is a canine behavioral assessment & research questionnaire.
  • It is designed to provide dog owners and professionals with standardized evaluations of canine temperament and behavior.
  • It is the only behavioral assessment tool of today’s kind to be tested extensively for reliability and validity on large samples of multiple dog breeds.
  • One hundred one questions are asking the different ways in which a dog would respond to certain stimuli in their homes.
  • It’s easy to use, and anyone that understands or owns dogs can use it.
  • The test can be completed in 10 to 15 minutes.
  • All veterinarians, dog rescues, breeders, researchers, behavioral consultants, and working dog organizations have access to the C-BARQ.
  • Right now, it is available to all dog owners for the current research that Dr.Serpell is doing about dog breeds. He is working together with Dr. Nick Dodman in “The Gift of Life” to help give all dogs a better chance for a home for life.


Please help get this project funded by visiting:

The C-BARQ, an online tool that dog owners use to fill out and rate their dog’s behavior, questions pet parents how their dogs respond to certain stimuli in their environment. Today with more than 80,000 surveys, Dr. Serpell has gathered one of the largest databases in the world for canine behavioral information.

Dog breeds and aggression

According to this study, Dr. Serpell says that between 10 to 15 percent of dogs can demonstrate extreme aggression, with another 20 to 30 percent of dogs showing no change at all. Breeds used for fighting and guard dog purposes like the Pit Bull and the Akita tended to demonstrate extreme aggression on the C-BARQ test. Yet, if you think that these were the most aggressive breeds, think again! The tiny and cute Dachshund tests as the most aggressive of all dog breeds. According to the C-BARQ test, this breed demonstrates aggression toward other dogs, new people, and even their human parents!

All the data obtained from the C-BARQ test indicates that breed traits are not as cut and dry as one would imagine. Dr. Serpell suggests that breed variety is human-made and began when dog owners began breeding specific characteristics or behaviors.

 Influence of dog owner and environment

 Dr. Serpell advises against judging a dog solely based on its breed because this overlooks a significant factor: How a dog’s environment influences him and how much the dog’s owner’s personality will influence the behavior of a dog.

Ever wonder how deeply ingrained certain canine behaviors are? Dr. Serpell wanted to find out if certain behaviors were inherent to specific breeds. But he faced a problem. Studying domesticated dogs meant having to look inside their own homes. It was because of this situation that he created the C-BARQ online test. Serpell says, “The behavior of dogs is difficult to study because they live in people’s houses where you can’t really observe them.”

“Dogs perceive signals from us that we’re not even aware we’re giving,” says Dr.Serpell via Science Friday with Ira Flatow video. “Little attributes of personality we may have, probably change the way they typically behave. It’s unendingly interesting to me.”

To help get the word out about this study: The Gift of Life by Dr. Nick Dodman at Tufts, and Dr. James Serpell, visit

For more information on the C-BARQ, visit


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