My 2-year old Chocolate lab Renzo has this lesion in his mouth (see picture). When he was very very young he had the same lesion next to one of his canine teeth; we took him to the vet and he could not find anything and asked us to observe him. The lesion disappeared after a few "months". Now it came back again. I will check with vet again but I was wondering if any of you has any experience like this and would like to share it with us.
id go to a vet. don't like those things and let them tell me it's nothing.
Definitely go to the vet!
WindyCanyon Girls, August 2014