The Boston Terrier is a friendly and lively dog. The breed has an excellent disposition and a high degree of intelligence, which makes the Boston Terrier an incomparable companion. Boston Terriers, also called the Boston bull, are compact and well-muscled dogs.

Their faces are unmistakable with a short, wide muzzle, dark large round eyes set far apart, and small, fine, erect ears. They have a broad, flat head without wrinkles and a short, square muzzle leading to an ample black nose. Its neck is slightly arched and its chest is broad. Its limbs are straight and muscular. Its hair is short, brilliant, and of a fine texture that comes in brindle and white or black and some are born brown and white.

Though bred at first for use in dog fights, today's Boston Terrier has been bred to have less aggressive tendencies. It is gentle, alert, very intelligent, and well-mannered. Enthusiastic and occasionally rambunctious, this breed has a sense of humor. They are very sensitive to the tone of one's voice. This breed likes to learn and therefore is not difficult to train.