My yorkie has had terrible breath. I just assumed it was just how his breath smells. I looked into his mouth today while giving him a bath and he has a huge swollen gray spot in between his teeth. (Baby and adult teeth) do I need to take him to the emergency vet or can it wait until tomorrow? He has had no change in behavior. still eats and drinks as normal. But it looks and smells like its rotting and I'm scared for him.