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My dog has a small bump near his rectum. What is it and what to do?

Updated On September 23rd, 2025

Pet's info: Dog | Boxer | Male | neutered | 4 years and 8 months old | 70 lbs

My dog has a small bump near his rectum. Curious to know if you can determine what it is from the attached picture.

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1 Answer

Most Helpful Answer

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Answered By Dr. Heidi DVM, CVA, CCRT, CVTP, CVSMT, CVCH

Veterinarian, Certified Veterinary Acupuncturist, Certified Canine Rehabilitation Practitioner

Published on June 18th, 2018

Anytime a new mass is noticed, I always recommend having it evaluated to see what it is and if anything needs to be done about it. Unfortunately, we often can't tell anything about a mass by just looking at it. Your vet can perform a simple test called a fine needle aspirate where they use a small needle to collect some cells from the mass, then look at them under the microscope. They may even need to send the cells to the lab for a pathologist to examine them, so we know what the mass is. If it is benign, you might not need to do anything about the mass at all, but if they see cells that worry them, they might recommend removing the mass. Good luck! I hope that was helpful. Thanks for using Petco Pet Education Center, formerly Petcoach.

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