My dog has a red, sore lump on his penis. When should I see a vet?
Updated On September 23rd, 2025
Pet's info: Dog | Greyhound | Male | neutered | 8 months and 6 days old | 39 lbs
hello, over the last few days I have noticed a very small blister like lump near the opening of my dog's penis. It's red/purpleish in colour and is causing him no discomfort or problems with peeing, but to me looks quite sore. Another dog licked the area earlier today as if to suggest a problem
3 Answers
Most Helpful Answer
Published on November 14th, 2016
It's possible something may have irritated Barley's penis, causing the blister you are seeing. It is best to keep the area clean and dry and prevent him and other dogs from licking or chewing at the spot. If it doesn't clear up in a day or so, becomes bothersome, or affects his ability to urinate, it is best to have a vet take a look to see if there is a possible infection or other issue causing it.
1Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on July 19th, 2021
This lump/bump/growth should be ideally examined by your local vet to have a diagnosis established. Your vet may want to perform an FNA (fine needle aspiration) or a biopsy to sample the bump and determine its underlying nature. Differentials would include skin cysts, the result of an acute allergic reaction, infections, benign type of tumors. Buster collar may be useful as well to avoid any licking. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. If this answer was helpful please let us know, this will be used to improve our service!
1Pet Parents found this answer helpful
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Published on January 19th, 2017
If the area has changed recently or rapidly, it is a good idea to have your vet take a look. Growths, irritation, allergies and more may all cause changes to the skin or current growth, and should be checked out. Your vet may recommend testing or taking a sample of the changes if the appear concerning.
1Pet Parents found this answer helpful
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