The American Bulldog descends from working bulldogs brought to colonial America, where they became 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. Today's dogs are muscular and mostly white, weigh about 60 to 115 pounds, and come in leaner athletic builds and heavier, shorter-muzzled ones.
Many are affectionate, loyal family dogs with a confident, protective streak and plenty of stamina, though each dog differs, and many dogs labeled American Bulldogs are mixes. Their strength makes early socialization and steady, reward-based training important. In Wasilla, that stamina suits winter walks, and the short, moderately shedding coat is easy to maintain, but it offers little insulation when temperatures sink.