Tis not the breed but the parenting that causes dogs to have behavior issues. Just like kids that have no parenting...they are nasty also and not pleasant to be around. Staffies are just like every other dog that is brought up right...which is the key issue. Any breed of dog that is encouraged to act out there dark side or is not taught manners will bite. And if you don't know the correct way to approach a new dog...then don't until you read Cesar's book.