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What's this red lump on my dog's leg? Is it a tumor? When to see vet?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 5 years and 3 months old | 55 lbs

My dog has a red lump on his left leg

3 Answers

Most Helpful Answer

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Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

Veterinarian

Published on December 19th, 2021

Hi again and thanks for sending the pic to us. In this case this lump seems to be a tumor and would need ideally to be checked by your local veterinarian to differentiate in between benign and more sinister ones. The lump seems big enough to be able to take a fine needle aspirate from it without using local or general anesthetic. A small needle can be inserted inside the lump to get some cells out and analyse them.

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1Pet Parents found this answer helpful

Other Answers

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    Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

    Veterinarian

    Published on

    Hi and thanks for your request. In this case a picture of the lump would be essential to determine the underlying nature of it more specifically. I would recommend to send it by email to our customer care service.

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    Answered By David Elbeze, DVM, MRCVS

    Veterinarian

    Published on January 1st, 2017

    This lump needs to be checked and analysed as there are many conditions and types of tumors that could look like that. take Charlie to the vet, they will perform a fine needle aspiration on the growth and send it to the lab for analysis. when the result comes, the vet will advise what needs to be done according to the diagnosis.

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