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While the boston terrier is much smaller and only comes in brindle/white, black/white, seal/white, the Olde Boston Bulldogge is bigger (supposed to be what this dog originally looked like before it was bred down) and comes in all colors like the bulldog. The Boston Terrier should not weigh more than 25 lbs. The boston bulldog can weigh any where from 25 to 45 lbs. Furthermore, with the Boston Terrier full colors or white heads are not acceptable. They should have white front legs and white legs up to the hock in the back (desired markings).
since this new breed did not resemble the Bullterrier, the dog should have its own breed identity. He felt that this dog having been bred in and around Boston, it should be named the Boston Terrier. So, in 1891, the American Bull Terrier Club changed its name to the Boston Terrier Club of America and changed the name of the breed to the Boston terrier. The breed was accepted into the American Kennel Club in 1893.