The American Bulldog descends from working bulldogs brought to colonial America, where they became farm dogs in the South, catching loose cattle and feral hogs and guarding homesteads. The type nearly disappeared after World War II before John D. Johnson and later Alan Scott revived it. The result is two broad types: the heavier, shorter-muzzled Johnson or bully type, and the leaner, more athletic Scott or standard type. Many dogs are a blend of both.
Adults commonly weigh 60 to 115 pounds and are mostly white, often with red, brown or brindle patches. Many are devoted, affectionate and confident, with a protective streak. In Garland's single-family neighborhoods, that strength means secure fencing, early socialization and consistent reward-based training matter from the start. Dogs labeled American Bulldog in shelters are often mixes, so size and energy can differ from the standard.