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 type nearly vanished after World War II until John D. Johnson and Alan Scott revived it, which is why you'll see two builds: a heavier, shorter-muzzled Johnson type and a leaner, more athletic Scott type. Most are mostly white, weigh 60 to 115 pounds and have a short coat that sheds moderately.
Many are affectionate, confident and protective with their people, with the stamina of a farm dog. In St. Petersburg that means a daily outing and either a secure yard or a solid leash, since strength matters on a busy sidewalk. Early socialization and reward-based training help. Many dogs labeled American Bulldog are mixes, so size and energy vary.