Australian shepards are suppost to be territorial. I know that, they are alittle more timid around other people and protective, so any little signs of aggression from you can possible trigger something, I am very aware of that. But the past few days, he has tryed to bite me, and a few of my sisters friends. He will just stare at you then aim for your face. He hasnt gotten me yet but hes gotten others. Not terribly hard, but that isnt acceptable. I personally know that i didnt do anything threatening, I dont know about the others considering i wasnt there. Is there anything I can do to prevent that? That needs to nipped in the butt before my dad gives him away...please help!