Physical Characteristics:

General Appearance: Sturdy, athletic, powerful, muscular and hardy. Colour: Any colour, colour pattern, or combination of colours is acceptable, except for solid black, solid blue, and tricolor (white with patches of black and tan). Coat: Short, close, and stiff to touch. Tail: Set low, tapering and can either be natural or docked (a natural tail is preferred). Ears: Set high, of medium size and may be dropped, semi-pricked or rose-shaped. The ears may be cropped but natural ears are preferred. Body: The chest is deep and moderately wide with well sprung ribs. The back is broad and muscular with topline slightly declining downwards. The loin is short, broad, and slightly arched, blending into a moderately sloping croup. The flank is moderately tucked up and firm.

Additional Comments:

The American Bulldog is higher on leg and more agile than English Bulldog. Some of these dogs are reportedly able to leap six feet or more into air. The American Bulldog should not be confused with uniquely different breeds such as American Staffordshire Terrier or American Pit Bull Terrier.

Physical Characteristics:

General Appearance: Stocky, heavy, rather low, compact, with a bold, massive head in broad proportion to dog's size. Colour: Brindle, red, fawn with or without black masks and/or white patches. Also solid white and pied. Coat: Short, smooth, close and fine in texture. Tail: Straight or screw-shape, short, set low and carried downwards. Ears: Far apart, set high, small, thin and rose shaped. Body: Low, pear-shaped, short and strong back, broad shoulders and narrow towards loin. The belly is tucked up, with a broad chest and widely set forelegs.

Additional Comments:

Due to characteristics of Bulldogs nose and throat, airflow tends to be restricted. This causes them to breath noisily and to have problems with breathing in hot weather. Due to broad heads and narrow pelvis of Bulldogs, puppies are commonly delivered by caesarian section.