The American Bulldog descends from working bulldogs that settlers brought to the colonial South, where they caught loose cattle and feral hogs and guarded farms. The breed nearly disappeared after World War II before John D. Johnson and Alan Scott revived it, leaving two broad types: the heavier, shorter-muzzled Johnson type and the leaner, more athletic Scott type. Many dogs today blend both. Adults usually weigh 60 to 115 pounds and are mostly white.
Many American Bulldogs are affectionate with their families, with a confident, protective streak and plenty of stamina. In a city of row houses and busy sidewalks, early socialization and calm leash manners matter, because a dog this strong is hard to manage if it lunges. Reward-based training and secure handling help. Dogs vary, and many shelter dogs labeled American Bulldog are mixes, so each dog's own personality matters more than the label.