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Why does my dog have a red bump on his private area after neutering?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Male | neutered | 9 months and 1 day old | 12 lbs

My dog has a small red blister on his penis shaft by where his testicals use to be.

4 Answers

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on July 16th, 2017

Hi, thanks for using Petco Pet Education Center, formerly Petcoach. It's hard to say with out seeing a picture or without knowing more information. If he was neutered recently or in the last few weeks and the blister is by the old incision it could be a suture reaction. There are many reasons for red skin bumps. You can gently warm compress the bump twice daily. If you can post a picture it may help. Otherwise get it checked by your Vet if it doesn't get better

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2Pet Parents found this answer helpful

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    Answered By Ricardo Fernandez, DVM

    Veterinarian, Veterinary Oncology Resident

    Published on November 21st, 2018

    Thanks for using Petco Pet Education Center, formerly Petcoach! It is hard to know what this may be without an evaluation. I suspect that this is likely unrelated to the neuter per se and this is likely due to an itch possibly secondary to allergies for example or perhaps there may be an infection going on. I recommend that you have him evaluated by a veterinarian for further assessment and treatment. They would be able to evaluate him and determine what may be going on so that he can be treated accordingly. Good luck!

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    1Pet Parents found this answer helpful

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    Answered By Ricardo Fernandez, DVM

    Veterinarian, Veterinary Oncology Resident

    Published on December 7th, 2017

    Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. 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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    1Pet Parents found this answer helpful

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    Answered By Ricardo Fernandez, DVM

    Veterinarian, Veterinary Oncology Resident

    Published on November 8th, 2018

    Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. There is no way of knowing for sure without an examination though this represents a reason to seek veterinary care. This is usually determined with an examination and a fine needle aspirate (FNA) or a biopsy. Treatment depends on the findings up to that point. I recommend you have Avery evaluated by a veterinarian for further assessment and treatment. Good luck and have a good night!

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    5Pet Parents found this answer helpful

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