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What is this lump on my dog's leg that she keeps biting and licking?

Updated On September 23rd, 2025

Pet's info: Dog | Labrador Retriever | Female | unspayed | 2 years and 3 months old

My dog has a small lump on the back of her leg, she keeps biting it and licking it. What is this?

3 Answers

Most Helpful Answer

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Answered By Katie S

Certified Dog Trainer

Published on March 6th, 2016

It could really be anything without knowing a bit more information. Lumps, especially ones that change over a period of time or seem very irritating are concerning. It could be something as simple as an insect bite or wound if it just appeared. If it has been there a while it could be a cyst or even cancer. Lumps that have been there for a while or are especially bothersome should be checked out by a vet. They can aspirate it with a needle and check the cells inside to find out a cause and possible treatment

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16Pet Parents found this answer helpful

Other Answers

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    Answered By Dr Stafford, BVetMed, MRCVS

    Veterinarian

    Published on May 29th, 2018

    This may just be a benign wart but I would advise you to get it removed or tested as if it is annoying her then it may be a tumour known as a mast cell. They are very itchy and cause the dog to irritate them. Thankfully most skin tumours can be cured with surgical removal.

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    1Pet Parents found this answer helpful

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    Answered By Lauren Jones VMD

    Veterinarian

    Published on September 1st, 2017

    Ouch, poor Francesca! This lump could be due to a variety of causes, including a benign or malignant mass, cyst, or granuloma from foreign material. The only way to differentiate between these causes is to take Francesca to her vet for a physical exam and fine needle aspirate, which will involve drawing a few cells from this lump using a needle so that the cells can be examined microscopically. From there, her vet will be able to advise you as to whether surgery, home monitoring, or medications are indicated. Since Francesca has been licking at this lump, there is a chance that it could become infected and more irritated. Until you can get to the vet, I recommend putting an e-collar (cone) on her to prevent further irritation. I hope that all goes well!

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    1Pet Parents found this answer helpful

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