Originally posted by wolf_Q
it seems rather common in older dogs. I think they are harmless.

Let us know what the vet says, I hope it's nothing serious.
My Ashley (RB) developed a couple of these as she aged. They were nothing serious and the vet said it was only necessary to have them removed for cosmetic reasons if they bothered us. Hope your pup is OK, but you are wise to have it checked out.