My brother and his wife raised a pit bull from an 8-week-old puppy and like the one you're describing, it was the sweetest thing. She wasn't aggressive and had never caused any problems at all and then one Saturday afternoon, we were all sitting in the family room and my little 2 1/2 year-old nephew came in the room and my sister-in-law reached down to pick him up. The dog was lying on the other side of the room, at least 12 feet away and for no reason and without any warning whatsoever, she suddenly jumped up and bounded across the room and latched onto my little nephew's shoulder. It was cold that day and he was wearing a jacket over a shirt and then an undershirt underneath that and the layers of clothing are the only thing that kept that dog from ripping him apart. There were 4 adults in the room, but it was so unexpected and happened so fast that we couldn’t do anything. Even after stabbing the dog with a butcher knife multiple times, she still kept hanging on and ripping and tearing and trying to kill him. By the time she finally let go, her insides were pouring out on the floor from where my brother had stabbed her to death. The dog and my nephew had been together from the day he was born and he had played with her and she had never so much as growled when kids played with her and rolled around with her. My nephew suffered severe nerve damage and will never have full use of his left arm -- all because of a pit bull. Until that day, I had never paid much attention to what people say about pit bulls, but I saw what happened and I will NEVER allow a pit bull around my children and I won't allow them to visit anyone or take them to visit anyone who owns a pit bull.