i blame the dog owners, the way the dog is brought up plays a part in attacks, i had a rottweiler and she was one of the nicest dogs ive met, not one bit of aggression in her, but i have met people with breeds staffy/rottie and they would love it when they growled and got on toward people and other dogs as they must have thought they were hard or something. Well that is my own opinion anyway, some might disagree Nicole.