Well, I guess there are always exceptions to the rule. About a year ago or so, this pit made the news when an intruder entered the house of his owners forcing the mom and 2 young daughters to lay down on the ground face down. He had a gun and they complied right away. Their pet pit was in the other room when he heard the commotion, came running to the rescue and engaged right away. He was shot three times. One shot in the head, one in the neck and one in the body. And guess what, he didn't let go of the intruder even after being shot three times!! The intruder got spooked, managed to get away and ran for his life. The beauty of it is that the pit lived and recovered within a couple of weeks. Very impressive for a pet quality dog that never received any training, and that stayed on the target after being shot three times!