My daughter brought home a pit as a puppy. It had been mistreated and was very afraid of men. She started to develop into a family dog getting along with the female Doberman we already had. She was very suspicious of any man that came around. One day I went down the street to visit a friend and my wife and daughter can down going crazy that the two dogs had gotten into a fight and there was blood everywhere. I rushed home and it was over by the time I got there and they were both covered in blood. Got them to the vet and the pit was not hurt. The Doberman had just gnawed on the pits head which you cannot hurt. The Doberman was shredded in the chest and front legs. The pit ended up getting out of her kennel and attacking my female shorthair. My daughter witnessed the attack and tried to get her off the other dog and got bit. Not seriously but that was it! I will never have another. I know a lot of people have had good luck with them. If you ever see one of them "go off" it will scare the crap out of you.