They're fucking WOLVES guys. All of them regardless of breed. Every dog on the earth today can conceivably mate with a wolf and have puppies. Because that's what they really are.
Any dog can screw you up. That said, when one breed tends to commit most of the crimes, then you'd be crazy to bring one in the house, especially with little children present.
My sister had her hand mauled. Never seemed aggressive before and she raised it from a pup along with a lab pup she had about the same time.
Guess which breed did the mauling.