This 'American Gentleman' was accepted in 1893 by the American Kennel Club as a non-sporting breed. Color and markings are important when distinguishing this breed from the AKC standard. Color and markings are important when distinguishing this breed from the AKC standard. They should be either black, brindle or seal with white markings. Bostons are small and compact with a short tail and erect ears. They have a short nose, which can often cause breathing problems later in life, which is what leads to a low life expectancy. In the early years, the color and markings were not very important.