Working bulldogs brought to colonial America became all-purpose farm dogs in the South, catching loose cattle and feral hogs and guarding homesteads. After the type nearly disappeared following World War II, John D. Johnson and later Alan Scott revived it, producing a heavier bully type and a leaner standard type. Most are mostly white and weigh roughly 60 to 115 pounds.
Many are devoted, affectionate family dogs with a confident, protective streak and plenty of stamina. In Amarillo, that stamina fits long walks on flat trails, but their strength means early socialization, consistent reward-based training and secure handling matter from day one. Many dogs labeled American Bulldog in shelters are mixes, so size and energy vary, and some landlords and insurers restrict bully breeds.