Dog Training-Stop Your Dog's aggression #2 - Obedience Trai

[TheZhenyehuo]

hey im very interested in the constant obedience training on aggression how ever i just have one problem, in relation to your video you mentioned that the dog dominates and thinks his the boss, well for my dog i am the boss and he next showed any signs of aggression to but the problem is.... all my other family members, brother, mum, dad, sister in law he have shown aggression how would i come about in training this sort of behavior?