When I was in college a roomate kept 2 pit bulls that were sweet and well behaved. They were the nicest and best trained dogs I had ever been around. For exercise we would take a bicycle tire and get them both to bite down on it. They would lock their jaws and have a tug of war that often went over 1 hour. We drank alot of beer watching them and it was an amazing site to see their instincts at work. On time for no reason one of them took a chunk out of my roomates calves and he got rid of them. As nice as these dogs are there is something hereditary inside them that cant be denied or trained away. You need to be very careful with them and your neighbors have good reason to be concerned.
