I have a Miniture schnauzer age 13 years he's a little over weight he has a tartar peoblem and his breath is fowl. Lately he has been bleeding from the left side of his mouth (quite a bit when it does happen) and I can't seem to locate the location of the bleeding. Then it stops. He's not listless and seems the same. What is happening to him?
Optional Information:
Age: >12; Male
Already Tried:
nothing doni't know what to do