American Bulldogs descend from working bulldogs that came to the colonial South and became all-purpose farm dogs, catching loose cattle and feral hogs and guarding homesteads. The breed nearly disappeared after World War II until John D. Johnson and later Alan Scott revived it. That produced the heavier Johnson type and the leaner Scott type, and many dogs today are a blend. Most weigh 60 to 115 pounds and have a short white coat, often with patches of red, brown or brindle.
Many are affectionate, confident family dogs with a protective streak and lots of stamina. Their strength makes early socialization, consistent reward-based training and secure handling important from the first week. Some are choosy about other dogs, and each dog's history and personality matter more than any breed description.