Many dogs can be temperamental and bite sometimes, pit bulls kill you. They will tear all of the skin off your body and start removing limbs in 10 seconds. When they snap, they are killing machines that can’t be stopped. Not fully domesticated as someone mentioned is the best way to describe them. They are like a trained tiger, they can be totally nice but if you do something incorrect, they snap back to wild animal mode. Like Siegfried and Roy’s incident. They had tigers trained like pets for decades and then, snap!