All "aggresive" breeds can be great dogs... until they feel threatened. Then they can snap. It's the unpredictablity of these breeds that makes them dangerous. I once saw a pit jump into a car window and attack a guy who was just turning around in the driveway. Obviously the dog doesn't feel that those chicks are a threat, but who knows what the dog will percieve as a threat next time... the chick, a kid, you, your wife, other dog, etc... There's a reason that these dogs are feared!!