The American Bulldog may be solid white or white with all shades of brindle (black with brown stripes), brown, red, fawn or tan. The eyes are frequently different colors.

This breed is the closest surviving relative of the Old English Bulldog, which were used as working and guard dogs. The dogs moved with their owners across to South America, where the American Bulldog was developed. In the late 1940’s the Bulldogs were near extinction, but due to the breeding programs set up by John Johnson and Alan Scott, the American Bulldog breed was preserved. There are two types named after the breeders, the Johnson, known as the classic or bully type, and the Scott type, which is also referred to as the standard or performance type. The Johnson type is a large dog with a shorter muzzle and the Scott type is smaller with a longer muzzle. Today’s dog is a mixture of the two types. The American Bulldog is used as a guard, hunting and working dog. The breed was first officially recognized and registered by The National Kennel Club in 1970. The American Bulldog Association was established in 1989, and a year later the United Kennel Club recognized the breed in the working class.