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My dog's bump has a hole with gunk, and I put peroxide. What is it?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | spayed | 13 years and 5 months old | 38 lbs

my dogs has a bump i thought it was somethung like skintag but its not. i got some gunk out of it and now it has a hole and iam putting peroxide on it. what could it be?

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1 Answer

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Answered By Jessica Keay, DVM

Veterinarian

Published on June 13th, 2018

I am sorry to hear about Cinnamon! This could be a cyst, an abscess, an infected growth, a foreign body reaction, and more. I would stop putting peroxide on it as this can delay healing, and would just clean with a mild soap and apply an antibiotic ointment, and make an appointment for your vet to examine the area.

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