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What is this red mark on my dog's lower penis? Should I worry?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | neutered | 11 years and 10 months old | 20 lbs

Red mark came up on dogs lower penis seen in the picture today. What could it be

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1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on December 17th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! It is hard to know what this may be just based on these pictures as they are dark and blurry. This may be due to inflammation or irritation which may be just transient. However, if this is not transient, he should evaluated by a veterinarian for further assessment and treatment. They would be able to check on this so that therapy can be recommended accordingly. Best of luck!

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