Boston Terriers, also called the Boston Bull, are compact and muscular dogs. Their faces are very distinct 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 a black nose. Its neck is slightly arched and its chest is broad. Its limbs are straight and muscular. The Boston Terrier coat is a fine texture that is short and shiny, and is either black or brindle and white. There are occasionally brown and white versions.