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My dog's back lump is growing, changing color, and flaky. Is it serious?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | spayed | 2 years and 2 months old | 113 lbs

Hi I own a 2 year old Pomeranian chihuahua mix. For over a year now she has had a bump on her back that vets have just been watching. It has been getting larger and recently I've noticed it's been changing color and getting flakey skin on and around it. I'm wondering if maybe e warm weather has something to do with it. My dog does have very thick hair. I was wondering if this was something I should worry about or if I should just continue to watch. Thank you

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1 Answer

Most Helpful Answer

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Answered By Sarah Box, BVSc

Veterinarian

Published on June 9th, 2017

Thank you for your question, and including a picture-this is very helpful. This little lump is likely something benign like a skin tag or similar, but I always recommend that if an owner notices changes in color, size or shape of a lump, especially if it is growing quickly, that it be evaluated by your veterinarian. If you are very concerned it would not be wrong to request that the lump be removed, then it can be submitted for review by a pathologist to let you know exactly what it is. You could always arrange to have Mieya's teeth cleaned at the same time, small breed dogs are prone to dental disease and this is a good age to start preventative dental care!

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