hello. we have a 3 and a half year old french bulldog. he has a very strong personality. we were out last weekend and ended up adopting a yorkie mix dog. we are not sure how old he is but we were told he is possibly between 1 and 5. they dont seem to be warming up to eachother that well, but it has only been a week. Dash, our new yorkie barks alot and has been peeing in the apartment and even on our couch. Today he actually showed his teeth at my boyfriend and did it a few times. does anyone have any advice? could it be possible they will never be friends

. we just want them both to be happy.