Which breeds of dogs resemble a pit bull besides bull dogs and mastiffs?

The American Staffordshire resembles pit-bulls: some people think they're the same thing. There is also the American Bulldog which some might confuse with an enormous pit bull. If you're looking to add one of these dogs to your household, please RESEARCH the breeds extensively and get a puppy from a reputable source, such as a PROFESSIONAL breeder (who shows or works the dogs in competition) or a reputable rescue organization. These breeds are wonderful dogs for the RIGHT owner with the RIGHT experience and the proper care and training. They can be dangerous IN THE WRONG HANDS and without proper training.

Pugs or boxers

Pug? Pit bull?

Hmmm... pretty much every rottie/bulldog/lab (etc) mix.

American Staffordshire, I think.