Are there any inside the mouth? If it has a cauleyflower-like texture, it could be the Canine Papilloma Virus. It's basically harmless and there's no treatment other than waiting for it to run its course. Contagious to other dogs though. http://www.goldenretrieverforum.com/showthread.php?p=923106 I posted a pic of Molson's wart inside of his gum in that thread and it ended up disappearing about a month later. He has no signs of it anymore.A wart!! That is what it looks just like!! Where in the world does a dog contract a wart?? I'm going to the vet at 2.