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What is this black ball-like growth on my dog's mouth? Is it serious?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | neutered | 20 lbs

Hi I've found a black ball like growth a the side of my dogs mouth, any ideas what it could be please

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1 Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on July 12th, 2017

Hi, I'm Dr Johnson. Thanks for using Petco Pet Education Center, formerly Petcoach! Based on your picture it looks like the bump is probably a skin tag. But it could be a benign mass or a cancerous one. You could talk to your Vet about removing it locally with lidocaine and sending it out for biopsy. Good luck!

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