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What is this new, non-draining lump on my dog? Is it serious?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 80 lbs

I noticed this last night and don't remember it being there the day before. It dosen't feel like its draining. Any clue what this is?

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1 Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on December 11th, 2018

I can't tell from the picture. I would recommend that you have TooShort examined by a vet. It could be something like an insect sting or allergic reaction, infection, ringworm, or even a tumor. A vet will do a thorough physical exam and may take a sample for examination under a microscope to make a diagnosis.

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