[LuvMySissy]

I agree with Sugar's Mom - this is a tough one. I also would put a belly band on him as soon as he arrives and just explain to your granny that as he isn't housebroken you don't want him marking because of the smell of your pups. I would probably also contain my own pups for their safety or you can plan to do that if he acts aggressively. You never know though, they could play well together.