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Dog has a bump near his anus. What could it be and what to do?

Updated On September 23rd, 2025

Pet's info: Dog | German Shepherd | Male | unneutered | 11 years and 5 months old | 43 lbs

Hi, I noticed a few days ago that my dog has a small bump right beside his anus. Pictures attached. What could this be and what would be the possible treatment. I'll be consulting a vet , just wanted a second opinion. Thanks.

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2 Answers

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on July 31st, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. There is no way of knowing what it is just based on its appearance. Based on the location, often times these tumors are benign in nature and are known as perianal adenomas though about 10% are malignant and again it could be really any other tumor type. This is often differentiated by a test called a fine needle aspirate (FNA) which is a pain free, inexpensive and easy procedure which in most cases will help reach a diagnosis. Sometimes a biopsy is needed for a definitive diagnosis. I recommend that you have him evaluated by your veterinarian for further assessment and treatment. I am really hoping for something benign. Good luck and have a good day!

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Other Answers

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    Answered By Ricardo Fernandez, DVM

    Veterinarian, Veterinary Oncology Resident

    Published on February 28th, 2018

    Thanks for using Petco Pet Education Center, formerly Petcoach! It is hard to know for sure without being able to evaluate Rascal though this could be a benign or malignant growth. Alternatively, this may be due to an infection for example. This is often differentiated by a test called a fine needle aspirate (FNA) which is a pain free, inexpensive and easy procedure which in most cases will help reach a diagnosis. Sometimes a biopsy is needed for a definitive diagnosis. I recommend that you have him evaluated by your veterinarian for further assessment and treatment. I am really hoping for something benign. Good luck and have a good night!

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