I've seen that before, too. I bring my dog that is dog aggressive to Petsmart and other canine activites, but he is very controllable, as long as a dog is not in his face. Like Cathy said, it's only the idiots that let their dogs come right up that I have a problem with. I saw a pit bull and bull terrier really get into it one time, and the owners were screaming at each other.. but if they had just kept to themselves there wouldn't have been a problem.