Help... I have a 9 week old MALE puppy that I took outside this afternoon to pee and he did just fine. However, in the past hour he has squatted like he was going to go, no less than 15-20 times and nothing comes out. I don't know if this is his way of marking his territory or if something is wrong. I called the vet and he doesn't seem to think it's an emergency. Thoughts?