American Bulldog Dog Breed Information | Purina

The American Bulldog, often known as the AmBull, is a large, verging on huge in some instances, muscular and robust dog. This is a type rather than a breed, and so appearances can vary. All however, should be well-built, long-legged mastiff types with broad heads and chests, well-muscled but never fat.  

All colours are possible, often white with coloured patches, all shades of tan and chocolate, black and tan, brindle and solid white. Occasionally, broken or rough coated dogs appear though these almost certainly have some influence from wire coated terrier types somewhere in their ancestry. 

Whatever their exact genetic make-up, a good American Bulldog should be friendly to a fault, enthusiastic and eager to please, easy to train and happy to settle and relax when necessary. Unfortunately, it is these traits plus their size and imposing look, that leads them often to appeal to the wrong people, under whose care they can be a danger to themselves and others.