American Bulldogs descend from working bulldogs that settlers brought to colonial America, where they became Southern farm dogs that caught loose cattle and feral hogs and guarded homesteads. The type nearly vanished after World War II until John D. Johnson and Alan Scott revived it. Adults weigh about 60 to 115 pounds and are mostly white, in a leaner Scott type and a heavier Johnson type, and many dogs are a blend of both.
Many are devoted, affectionate and confident, with a protective streak and plenty of stamina. In Anchorage, that strength matters on busy paths and on greenbelts where moose and bears roam, so solid leash manners and early socialization pay off. Many shelter dogs labeled American Bulldog are mixes, so size and energy vary from dog to dog.