I think it's possible that the aggression may be fear based because when he's out on his lead and people approach to talk to him, he becomes aggressive and i'm wondering if that's his defence mechanism. And as we don't know his history it's probably a good prognosis. The peeing however, I'm not sure on. I'm trying to find a pattern as to when he does it. Initially when we got him I was at home with him. Now I have a new job he's left alone more. But would this cause him to pee in the house/
Also, is obedience training successful with adult dogs/