Pitbull-Type Breeds

The breeds included in the pitbull-type category are among America's most popular, known for their exceptional temperament, versatility as service and therapy dogs, roles as K9 police dogs, and status as beloved family pets. While the American Pit Bull Terrier is the only breed with 'pit bull' in its name, the term 'pitbull' is broadly used to categorize dogs based on physical appearance rather than genetic heritage, typically referring to medium-sized dogs exhibiting traits from various bully-type breeds. Among these, four specific breeds are included in the pitbull-type category by the American Kennel Club (AKC) and United Kennel Club (UKC). Due to their popularity and the broad nature of the 'pitbull' label, dogs labeled as 'pitbulls' represent an estimated 20% of the total dog population in the U.S. Below, we explore the history of pitbull-type dogs, list the specific breeds, and explain the origins of the 'pitbull' label.

History Of Pitbull-Type Dogs

Bred in early 19th century England, pitbull-type dogs, then called 'Bull and Terriers,' were crossbreeds between bulldogs and terriers. Their early history is rich and complex, as they were bred for a diversity of roles, from working on farms to herd, protect, and manage livestock to safeguarding homes. Unfortunately, their history also included participation in the inhumane practices of bull-baiting and dog fighting. It's important to note, however, that these cruel practices were not exclusive to what we recognize today as pitbull-type breeds; many different breeds were subjected to these now-illegal activities.

Throughout the 20th century, pitbull-type dogs rose in popularity and became one of America's favorite family pets. They even served as national symbols and appeared on World War I and II recruitment posters, earning them the title 'America's dog.' Today, pitbull-type dogs excel in various roles, including service and therapy dogs, K9 police dogs, and family companions. They are known for their excellent temperament and have become one of America's most popular dogs.

The 'Pitbull' Label

Historically, the term 'pit bull' was a broad and informal label applied to any dog engaged in the inhumane practice of bull-baiting, popular in England in the 16th through 19th centuries. Now outlawed everywhere, this activity involved dogs, regardless of their breed, seizing tethered animals such as bulls in an enclosed area known as a 'pit,' giving rise to the name 'pit bull.' The term did not refer exclusively to the breeds we associate with pitbull-type dogs today. Instead, it encompassed a variety of breeds and mixes that participated in bull-baiting, including, but not limited to, various bulldog and terrier breeds. For example, even a Mastiff would have been labeled a 'pit bull' if it was used for bull-baiting. It's important to note that the propensity for baiting is not an innate characteristic of any breed; instead, it is a behavior taught and developed through training, much like teaching a dog to sit or fetch.

Today, 'pitbull' has become an umbrella term loosely used to describe many different medium-sized, short-haired breeds and mixes with physical features typical of various bully-type breeds. While the American Pit Bull Terrier is the only formal breed with the term 'pit bull' in its name, over 20 different breeds and numerous mixes share physical traits common to those in the pitbull-type category. A recent study on canine genetics found that 98% of dogs with pitbull-type ancestry are mixed breed. Moreover, it revealed that most dogs with pitbull-type ancestry have less than 50% genetic makeup from pitbull-type breeds, making them, by definition, mixed-breed dogs (not 'pitbulls' or 'pitbull mixes'). Therefore, when a dog is casually or visually identified as a 'pitbull,' it is more likely to be a mixed breed, or even an entirely different breed, than one of the recognized pitbull-type breeds.

Note: Except for this section explaining the term 'pit bull,' our rationale for using 'pitbull' as a single lowercase word throughout this site is explained here.

Breeds Misidentified as Pitbulls

Over 20 different breeds and numerous mixed breeds share physical traits with pitbull-type dogs. However, the breeds listed below, especially their mixes, are often mistakenly identified as pitbulls due to their appearance. These breeds are generally larger and less common than the pitbull-type breeds, and no canine organizations categorize them as pitbull-type breeds. Most belong to the Working Group category of dog breeds.