Size
There is no designated height or weight for the breed, however on average they stand 20 to 24 inches tall (51-61 cm) and weigh 35 to 80 pounds (15-36 kg).
Coat and Color
Bull Terriers are thick-set and muscular with a short, dense coat. Acceptable colors for show dogs are white, (skin pigmentation and markings on the head are not penalized in the U.K. show ring), any color other than white, or any color with white markings (although blue and liver are highly undesirable).
Appearance
The Bull Terrier's most recognizable feature is its head, which is described as "egg shaped" when viewed from the front, and appears almost flat at the top, with a Roman muzzle sloping evenly down to the end of the nose with no stop. The unique triangle-shaped eyes are small, dark and closely set.
The body is full and round, while the shoulders are robust and muscular and the tail is carried horizontally. It walks with a jaunty gait, and is popularly known as the "gladiator of the canine race".