American Bulldogs descend from working bulldogs that colonial settlers brought to America. On southern farms they caught loose cattle and feral hogs and guarded homesteads. The type nearly vanished after World War II, then was revived in two main styles: the heavier, shorter-muzzled Johnson or bully type and the leaner, more athletic Scott or standard type. Adults weigh about 60 to 115 pounds and are mostly white, with a short coat that sheds moderately.
Many American Bulldogs are devoted, affectionate family dogs with a confident, protective streak and plenty of stamina. Their strength makes early socialization, consistent reward-based training and secure handling important from the start. Many shelter dogs labeled American Bulldog are mixes, so size, energy and looks vary from dog to dog.