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).
While the boston terrier only comes in brindle/white, black/white, seal/white, the Olde Boston Bulldogge comes in all colors like the ancient bulldog: red, brown, fawn, white and all shades of brindle, with white markings. Apart from these colors you also have black blue, seal and tuxedo, a classic Boston pattern.
Temperament
Old Boston bulldogges have kept close to the original Boston bull and terrier. They are known for their tenacity and sound temperament. Like the bulldog they have comical and interesting personalities and are very intelligent. They are active and playful but not the kind of neurotic and yappy dog that barks all day with no apparent reason. They love kids and can play with you as long and as hard as you want, but they can just as will sit in an easy chair and relax for hours.
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