My dog has a bump on his mouth. Could it be a wart? Is it serious?
Hi there and thank you for using Pet Coach! From the pictures you provided and knowing that Klaus is young, what you are seeing appears to be what we call a papilloma. These benign masses are caused by contact with the papilloma virus, usually picked up from another infected dog. The good news is that these masses typically resolve on their own and require no specific treatment. Sometimes these do not go away and need to be removed or are getting too large and become an eye sore or catch on objects and bleed. In these cases, sometimes we will prescribe an antibiotic such as Azithromycin which has been shown to reduce the size and even resolve some papillomas. Most of the time, however, these masses will turn gray or purple in color, shrink and then fall off. If you are concerned about the mass then I would get this examined by your vet. I hope this helps! Please let me know if you have any further questions or concerns. I am also available via phone or text consultation if needed.
Updated on September 23rd, 2025