This is a video training guard dog attack training Alex the black German shepherd. Earl Dunne is the handler and primary trainer. Not just to Alex with his attack dog training although bites very well. The excellent obedience training should always come before the personal work of bite protection. Feel free to visit our site for the training of any dog including training of police dogs, guard dogs for personal protection, and rehabilitation of aggression. All dogs at K9-1 trained dog is …