i know you already know this but i just want to point out a dog should only be trained to attack etc after it has already been highly trained in obedience etc. simply put, responsible ownership of protection dogs. not encouraging your dog to be as aggressive as possible and not teaching it anything else, and not too mention that you need to know what your doing and how to do it to properly teach a dog to attack etc. my dogs are not trained attack dogs, i did not raise them to be aggressive, but they wont allow a strange person into my yard. Had I raised them the way my neighbor and many ppl do, they would be overly aggressive.