The bottom line is that with pit bulls, as well as every other
breed of dog, the behavior of the dog is directly related to the
training given it by the owner. If the owner trains it to promote
its aggressive tendencies, then, it will be aggressive. If it is
trained to attack...it will attack. On the other hand, if the owner
has treated the dog with love and promoted its friendlier side, then
it will not endanger any human.

Ideally, one would like to think so. Unfortunately a large percentage of
reported pit bull attacks were from seemingly gentle family pets that just
snapped and went wild.