This mastiff measures between 40cm and 50cm and weighs between 16kg and 40kg. It has a good skeleton, a very muscular body and short hair. Many countries have outlawed the importation of the American Pit Bull Terrier. Nevertheless, it is an excellent watchdog, which needs to exercise a lot. Did you know where he gets his name from? Historically, this breed was designed to fight in the bulls ("bull") arena ("Pitt")!