My 8 year old male Boston Terrier and I have recently moved in with 4 new roomates (1 male human, 1 male pug and 2 male cats). Since we moved, my house trained dog has taken to peeing on a daily basis on my roomates toilet. He doesn't pee anywhere else in the house. We have taken to keeping him out of the bathroom, and that seems to work, but as soon as the bathroom door is left open, as it invariably is, he pees on the toilet again. Any suggestions for how to deal with this problem.
Heather

