American Bulldogs trace back to working bulldogs that came to the colonial South and became farm dogs, catching loose cattle and feral hogs and guarding homesteads. The type nearly disappeared after World War II before dedicated enthusiasts revived it. Today there are two broad looks, the leaner, more athletic Scott type and the heavier, shorter-muzzled Johnson type, and many dogs fall somewhere between. Most weigh 60 to 115 pounds and are mostly white.
That farm-dog background makes for a dog that's happiest with a job and a place close to its people. Many are affectionate and playful at home, though they can be watchful with strangers and picky about other dogs. The short coat sheds moderately all year, so regular brushing helps. Strength means leash manners and secure fencing matter, and renters should expect to be asked about breed policies.