Have a new issue w/Reina, 5 years old, never had this issue before. She has developed some red bumps on the outside of her mouth. Vet says its from drooling?? I am going to ruleout her food, she has certain toys that aggravate it so we are trying to stay away from those toys, she LOVES her toys and always has on in her mouth. Has anyone had an issue like this? by morning they are very tiny, but by the end of the day, under the chin and mostly one side of her mouth is all red bumps???