Size and Build
The American Bulldog is a large, muscular dog with males typically standing between 50 and 71 cm at the withers and weighing from 32 to 54 kg. Females are slightly smaller at 50 to 61 cm tall, weighing between 27 and 41 kg. The breed displays a powerful, athletic build with broad shoulders, heavily muscled legs, and a compact body that balances strength with agility. Body proportions vary slightly between the Bully and Standard types, with the Bully being more robust and the Standard type having longer necks and flatter toplines.
Coat and Colours
The coat is short, dense, and close-lying, varying in texture from stiff to soft. Accepted colours under the American Kennel Club standards include solid white and pied (85% colour) with various markings such as brindle, black, and fawn/red. Colours not accepted include solid black, solid blue, merle, tricolor, and a full black mask. The coat requires low to moderate maintenance, and minor seasonal changes in shedding may occur.
Distinctive Features
The head is large and broad with a well-defined stop, deeper than English Bulldogs, creating a distinct sharp angle with the muzzle. Bully types have a large round head with a pronounced stop and a slightly undershot reverse scissor bite, while Standard types have a sleeker wedge-shaped head with a tight undershot jaw and reverse scissor bite. Eyes vary from round to almond-shaped, usually dark brown with black rims, and ears set high can be dropped, semi-pricked, or rose-shaped. The tail is thick at the base, tapering, and typically carried upright when alert but relaxed between the legs.
Gender Differences
Males are generally larger and more heavily muscled than females, demonstrating greater bulk consistent with their guard and working heritage. Temperamentally, males may exhibit stronger dominance traits requiring confident handling, while females are often more responsive and slightly less assertive. Both genders, however, require firm and consistent training to manage their strength and high energy levels.
Gait/Movement
The breed moves with a smooth, well-balanced gait reflecting power and agility. Hindquarters provide strong drive, and at speed, the dog moves in a single track with a level topline and firm back. High head and tail carriage accentuate their confident, proud stance, a hallmark of their alert and energetic nature.