I was not there for the initial vet check. My sister took him and reported back. The vet didn't see anything with his teeth or mouth either visit. The initial diagnosis was possible gastritis or and infected duct or gland which was the reason for the antibiotics. We had our follow up appointment on Monday, and he is better. He hasn't had a wet chin since last Friday and his stomach fur color is turning white again. I asked to have a fecal sample checked (which wasn't done on the last visit) just to make sure. I am still not sure what caused it but will be keeping a close eye on him. We are also eliminating some things from his diet to see if it could be a food allergy or issue.