The Boston Terrier has a short wide muzzle and erect, batlike ears. The head is square, the eyes are set wide apart, the body is terrierlike, and the tail should be short. The smooth coat is black or, preferably, brindle with white markings that ideally include the muzzle, blaze up the head between the eyes, collar, chest, all the front legs, and the rear legs below the hocks.