Breed library

Boston Terrier

Boston Terrier photograph.
Boston-terrier-carlos-de.JPG - Andreas Schlaugat. CC BY 3.0. Source: https://commons.wikimedia.org/wiki/File:Boston-terrier-carlos-de.JPG. License: https://creativecommons.org/licenses/by/3.0. License: CC BY 3.0.

Breed overview

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.

  • Breed type: dog breedBreed reference breed kind.
  • Country of origin: United StatesBreed reference country of origin.

Breed facts

  • 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 was bred to Edward Burnett's bitch named Gyp (or Kate).

Size and appearance

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 lbs kg. Boston Terriers usually stand up to 15-17 in 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.

  • Body mass reference: 2.722 - 11.34 kgAdult breed reference quantity from the article infobox. Original value 6 - 25 lb. Unit conversion where applicable: 1 inch = 2.54 cm; 1 pound = 0.45359237 kg. Original field and references are retained in the revision-pinned article evidence.
  • Body mass reference: Up to 11.3 kgBreed reference body mass. maximum.
  • Height reference: 22.86 - 38.1 cmAdult breed reference quantity from the article infobox. Original value 9 - 15 in. Unit conversion where applicable: 1 inch = 2.54 cm; 1 pound = 0.45359237 kg. Original field and references are retained in the revision-pinned article evidence.
  • Coat length: short
  • Coat texture: smooth
  • Height category: medium
  • Height category: short
  • Weight category: medium
  • Weight category: small
  • Weight category: toy

Personality and behavior

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.

  • Attachment and attention seeking (C-BARQ mean): 2.07 / 4Owner-reported attachment and attention seeking factor mean for US reference population Boston Terrier.
  • Chasing (C-BARQ mean): 1.96 / 4Owner-reported chasing factor mean for US reference population Boston Terrier.
  • Dog-directed aggression (C-BARQ mean): 1.15 / 4Owner-reported dog-directed aggression factor mean for US reference population Boston Terrier.
  • Dog-directed fear (C-BARQ mean): 0.83 / 4Owner-reported dog-directed fear factor mean for US reference population Boston Terrier.
  • Energy (C-BARQ mean): 2.22 / 4Owner-reported energy factor mean for US reference population Boston Terrier.
  • Excitability (C-BARQ mean): 2.28 / 4Owner-reported excitability factor mean for US reference population Boston Terrier.
  • Familiar-dog aggression (C-BARQ mean): 0.49 / 4Owner-reported familiar-dog aggression factor mean for US reference population Boston Terrier.
  • Non-social fear (C-BARQ mean): 0.91 / 4Owner-reported non-social fear factor mean for US reference population Boston Terrier.
  • Owner-directed aggression (C-BARQ mean): 0.11 / 4Owner-reported owner-directed aggression factor mean for US reference population Boston Terrier.
  • Separation-related problems (C-BARQ mean): 0.65 / 4Owner-reported separation-related problems factor mean for US reference population Boston Terrier.
  • Stranger-directed aggression (C-BARQ mean): 0.50 / 4Owner-reported stranger-directed aggression factor mean for US reference population Boston Terrier.
  • Stranger-directed fear (C-BARQ mean): 0.58 / 4Owner-reported stranger-directed fear factor mean for US reference population Boston Terrier.
  • Touch sensitivity (C-BARQ mean): 0.82 / 4Owner-reported touch sensitivity factor mean for US reference population Boston Terrier.
  • Trainability (C-BARQ mean): 2.51 / 4Owner-reported trainability factor mean for US reference population Boston Terrier.

Exercise and activities

Care planning: build a weekly routine with walks, play and time to explore. Enter the minutes and sessions that work for your dog, then compare the weekly total with your available time. Keep notes about the activities your dog enjoys and adjust the routine together.

Training and enrichment

Care planning: choose one everyday skill to practice and keep a record of each session. Note the cue, the reward your dog enjoys and what went well. Rotate familiar games and new activities, and use your notes to choose the next small step.

Coat and grooming

Care planning: use the coat details above to discuss a grooming routine with your groomer. Record brushing sessions, baths and appointments in the app. Add the tools you use and your preferred schedule so the whole household can follow the same routine.

  • Coat length: short
  • Coat texture: smooth

Health and lifespan

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.

Living with this breed

Care planning: compare this profile's adult dimensions, coat care and available activity information with your household's routine. Make a shortlist, plan who will handle daily care and save the questions you want to ask a breed club, rescue or breeder.

Compare breeds

Compare supported adult height and weight ranges, matching research measures and sourced coat and care categories.

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Breed 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 lbs kg. 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 lb, 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 lbs kg.

Clubs and further reading

Sources

  1. Boston Terrier - WikipediaWikipedia contributors Retrieved 2026-10-14.License: CC BY-SA 4.0. Adapted excerpts from Wikipedia contributors, Boston Terrier, revision 1368874069. CC BY-SA 4.0. Formatting, citations and selection changed. Source history: https://en.wikipedia.org/w/index.php?title=Boston_Terrier&action=history
  2. Wikidata structured breed dataWikimedia contributors Retrieved 2026-10-14.License: CC0 1.0. Wikidata contributors (CC0).
  3. National C-BARQ breed and all-breed means from USA.PLOS ONE / Figshare Retrieved 2026-10-14.License: CC BY 4.0. Bohland, Kyle R.; Lilly, Meghan Leanne; Herron, Meghan E.; Arruda, Andréia G.; O’Quin, Jeanette M. (2023). National C-BARQ breed and all-breed means from USA.. PLOS ONE. Dataset. https://doi.org/10.1371/journal.pone.0289356.s003 CC BY 4.0. Selected rows and field names adapted; values unchanged.
  4. File:Boston-terrier-carlos-de.JPGWikimedia Commons Retrieved 2026-10-14.License: CC BY 3.0. Boston-terrier-carlos-de.JPG - Andreas Schlaugat. CC BY 3.0. Source: https://commons.wikimedia.org/wiki/File:Boston-terrier-carlos-de.JPG. License: https://creativecommons.org/licenses/by/3.0.
  5. Palipaws everyday care planningPalipaws Retrieved 2026-10-14.License: Palipaws original factual summaries. Palipaws. Original care-planning text, separate from breed measurements and licensed article summaries.
  6. AKC national parent club directoryAmerican Kennel Club Retrieved 2026-10-14.License: Factual reference only. Names and verified external links only. No source descriptions, logos or endorsement reused.