sorry, but i really don't think it matters. it's like putting up a bunch of pictures and asking which one is the true hound dog? 'hound' and 'pit bull' both cover a lot of dogs. personally i realize that these dogs are only bad when people make them bad or neglect them, but other people don't. whether it's a bull terrier, or a pit bull, or a staffordshire terrier, or a bull mastiff, or etc etc etc. they are all grouped into the greater category of fighting dogs, and most places now don't discriminate based on whether a dog is a registered pit bull, they include all the bull/fighting breeds and mixes, rotties, dobermans,sometimes german shepherds/mixes, AND dogs that look like the fighting breeds, plus they discriminate at their own discretion as well.