Coloring
The Boston Terrier is characteristically marked with white in proportion to either black, brindle, seal, or a combination of the three. Seal is a color specifically used to describe Boston Terriers and is defined as a black color with red highlights when viewed in the sun or bright light.Ideally white should cover its chest, muzzle, band around the neck, half way up the forelegs, up to the hocks on the rear legs, and a white blaze between but not touching the eyes. In show dogs, symmetrical markings are preferred.
The American Gentleman
Due to the Boston Terrier's markings resembling formal wear, in addition to its refined and pleasant personality, the breed is commonly referred to as the "American Gentleman."Frequently, variations on the standard are seen depending on the ancestry of the individual dog. At various times, the English Bulldog, English Mastiff, Staffordshire Bull Terrier, and French Bulldog—among other breeds—have been crossbred with Boston Terrier lines to minimize inbreeding in what is necessarily a small gene pool.
