The Bull Terrier was originally developed in the 19th century as a fighting dog and used for rat pitting, whereas, two Bull Terriers were placed in a pit full of rats and competed on which dog can kill the most rats in a set time. Later, the Bull Terrier became fashionable companions for gentlemen, but these days they’re a family companion and show dog. Bull terriers have high energy and intensity and need plenty of exercises and vigorous playtime.