Yes have it looked at next time you are at the vets. Until then just keep and eye on it- if it stays small and pink I would not worry... if it starts to bleed - get crusty and black then go and have it checked out.
Looks like a doggy wart. Robbie has one or two small ones. My vet said when we do his dental she will take the big one off, otherwise not to worry about. Unless it changes, gets markedly larger or bleeds.
"To my mind, I hold that the more helpless a creature, the more entitled it is to protection by man from the cruelty of man."
"The greatness of a nation and its moral progress can be judged by the way its animals are treated."