The Boston Terrier is smooth coated, and short-headed, in general body is packed together, with a short tail. With the tail being short, all and all, a very well proportioned, balanced dog. The head is in proportion to the size of the Boston Terrier dog. The body is rather short and, because of the shortness of tail being so prominent, the dog may look badly proportioned. The limbs strong and neatly turned.
The coat is short, silky and bright with a fine texture. For color and markings, desirable colors included, seal, black or brindle, with equally marked white areas. Brindle is the preferred. Seal appears black, with the exception of a red cast that can be present when the dog is viewed in sun light. True black will show black in any type of lighting.