I have a boy Yorkie he is turning 7 months tomorrow and I have not had that problem. Although I did neuter him last month. But as of know he does not mark in my apartment or when we go to the dog park. He just pee's when he needs to that is all. He is trained to use pee pee pads and he doesn't pee anywhere else when he is at home by himself. I hope this helps, I guess as long as you neuter them before they get that behavior they won't mark around.
