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My dog has a hard lump under her tail. Is it bone or something else?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Female | spayed

She has a hard lump under tail near the base feel like bone no pain she's 3 years old What could it be

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on January 12th, 2017

There are a couple of things this could be on Lola. It could be that she hurt her tail at some point in the past, and that is a boney growth from the injury. It could be a benign or malignant tumor as well, although a malignant tumor is unlikely in a young dog. Any suspicious lump should be examined by a vet, and I would have Lola checked out to have the lump diagnosed. The vet can recommend treated if needed.

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