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Why does my dog have black circular lumps on her back legs?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | spayed | 3 years and 6 months old | 57 lbs

My dog nella has the black circle lumps on her back hine legs. Do you know what they are?

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1 Answer

Most Helpful Answer

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Answered By Cara, DVM, cVMA

Veterinarian

Published on August 31st, 2017

Those are unusual lesions on Nella! I am not entirely sure what they could be, but skin infection with bacteria or fungus can cause circular lesions on the skin. I would have her examined by your vet, they may want to do a few tests on the lesions to determine what is causing them and a good method for treatment. They may recommend both oral medications and potentially topicals or a special bath.

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