Dog breed · United States
The Boston Terrier is a breed of dog originating in the United States of America. It was accepted in 1893 by the American Kennel Club as a non-sporting breed. The dogs are small and compact, with a short tail and erect ears.
The Boston Terrier ranked as the 23rd-most registered breed with the American Kennel Club in 2024.
Temperament: Boston Terrier is a gentle breed that typically has a strong, happy-go-lucky, and friendly personality with a merry sense of humor. Boston Terriers are generally eager to please their owner and can be easily trained. They can be very protective of their owners, which may result in aggressive and territorial behavior toward other pets and strangers.
Both females and males are generally quiet and bark only when necessary. Their usually sensible attitude toward barking makes them excellent choices for apartment dwellers. They enjoy being around people, get along well with children, the elderly, other canines, and non-canine pets, if properly socialized.
Description: The Boston Terrier is a compactly built, well-proportioned dog. It has a square-looking head with erect ears and a slightly arched neck. The muzzle is short and generally wrinkle-free, with an even or a slightly undershot bite. The chest is broad and the tail is short. According to international breed standards, the dog should weigh no more than 25 pounds ([dose — ask your vet]). Boston Terriers usually stand up to 15–17 inches (380–430 mm) at the withers.
The American Kennel Club divides the breed into three classes: under 15 pounds, 15 pounds and under 20 pounds, 20 pounds and not exceeding 25 pounds.
Coat And Color: The Boston Terrier is characteristically marked with white in proportion to either black, brindle, seal (seal appears as black with a red cast in lighting), or a combination of the three. Solid colors and colors not mentioned are not accepted by the breed standard.
According to the American Kennel Club, the Boston Terrier's markings are broken down into two categories: Required: which consists of a white chest, white muzzle band, and a white band between the eyes; and Desired: which includes the Required markings plus a white collar, white on the forelegs, up to the hocks on the rear legs. For conformation showing, symmetrical markings are preferred. Due to the Boston Terrier's markings resembling formal wear, in addition to its refined and pleasant personality, the breed is commonly referred to as "the American Gentleman."
Health: A 2024 UK study found a life expectancy of 11.8 years for the breed compared to an average of 12.7 for purebreeds and 12 for crossbreeds.
Curvature of the back, called roaching, might be caused by patella problems with the rear legs, which in turn causes the dog to lean forward onto the forelegs.
The Boston Terrier is a brachycephalic breed of dog. Brachycephaly refers to the shortened muzzle of the breed which results in a pushed-in appearance of the face. Brachycephaly results in deformation of the upper airway tract and leads to obstruction of breathing. Effects of brachycephaly are stridor, stertorous breathing, emesis, skin fold dermatitis, brachycephalic airway obstructive syndrome, exophthalmos, pharyngeal gag reflex, cyanosis, and laryngeal collapse. Other issues arising from brachycephaly are risk of complications whilst under anaesthesia, and hyperthermia — with the latter caused due to an inability to effectively reduce body temperature via panting.
Bostons frequently require caesarean section to give birth, with over 80% of litters in a UK Kennel Club survey delivered this way. A UK study found Boston Terrier bitches to be 12.9 times more likely to experience dystocia.
The breed is predisposed to the following dermatological conditions: atopic dermatitis, allergic skin disease, demodicosis, hyperadrenocorticism, mast cell tumour, pattern alopecia, and zinc-responsive dermatosis.
History: The Boston terrier breed originated around 1870, when Robert C. Hooper of Boston purchased from a man named William O'Brien a dog named Judge (known later as Hooper's Judge), which was of a bull and terrier type lineage. Hooper's Judge is directly related to the original bull and terrier breeds of the 19th and early 20th centuries. The American Kennel Club cites Hooper's Judge as the ancestor of nearly all true modern Boston Terriers.
Judge weighed about 32 pounds ([dose — ask your vet]). Judge was bred to Edward Burnett's bitch named Gyp (or Kate). Gyp was a white bulldog-type female, owned by Edward Burnett, of Southboro, Massachusetts. She weighed about 20 pounds ([dose — ask your vet]), was stocky and strong and had the typical blocky head now shown in Bostons. From this foundation of the breed, subsequent breeders refined the breed into its modern-day presentation. Bred down in size from fighting dogs of the bull and terrier types, the Old Boston Bulldogs, a direct ancestor of the Boston Terrier, originally weighed up to 44 pounds ([dose — ask your vet]).
The Boston Terrier Club was formed in 1891; it was admitted to membership in the American Kennel Club in 1893. It is one of a small number of breeds to have originated in the United States.
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