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Is yellow discharge from my young neutered dog's penis normal?

Updated on September 23rd, 2025

Pet's info: Dog | Fox Terrier | Male | neutered | 11 months and 13 days old

My dog has a yellow fluid/goo coming out of his penis, I am worried he may have a UTI or some other infection. The end of it is also a brighter pink than the rest of his skin. He is neutered and just under a year old. I'm sorry for the weird question but I want to make sure if he is ok, the probable causes and treatments. Thank you for your time.

4 Answers

Most Helpful Answer

Answered By Stephanie Echols, DVM

Veterinarian

Published on December 14th, 2017

Thanks for using Petco Pet Education Center, formerly Petcoach! Without seeing Harvey it is hard to say for sure what is going on. There is a normal yellow/green mucoid discharge (called smegma) that male dogs have to coat the penis inside the prepuce. There could also be an infection, like a bladder infection, but typically they have signs of increased thirst, frequent urination, and producing small amounts of urine at a time. To be sure, I recommend taking him to a vet for an exam and they can check the urine. If he isn't showing the other signs, I am suspicious this is the normal discharge male dogs have. I hope this helps. Kisses to Harvey!

3Pet Parents found this answer helpful

Related Answers from Veterinarians

Answered By Lindsey Edwards MVB, BSc, IVCA
Veterinarian
Published on January 21st, 2016
This is not uncommon after surgery in this area as long as it iis from the opening of the penis and not the wound itself. Monitor for pain, swelling, discharge from the wound or persistent penile discharge longer than 72hrs
83Pet Parents found this answer helpful
Answered By Dr. Melanie, BVSc MS
Veterinarian
Published on March 24th, 2019
This discharge can be normal. It may be smegma, which is actual a discharge from the penile sheath. It's good that the incision sites look normal, and I would continue to monitor Atlas. I hope this helps!
5Pet Parents found this answer helpful
Answered By Rebeccah Wood
Licensed Veterinary Technician, Registered Laboratory Animal Technologist
Published on August 13th, 2017
Hello there! A small amount of yellow-colored discharge from the penis is not all that uncommon in male dogs. A lot of the time it gets matted up in the fur around the penis and over time, it looks like there has been a lot of discharge. Keeping the hair around the penis trimmed can be helpful in preventing this. If the discharge had a odor or if Barley had any trouble urinating I might be concerned, but a bit of discharge is probably nothing to worry about. If any other symptoms develop, I'd recommend having Barley evaluated at the vet's office for a urinary tract infection. Good luck, and I hope Barley recovers from his surgery well!
4Pet Parents found this answer helpful

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A certain amount of discharge, especially in intact male dogs, may be normal. This discharge is known as smegma. If there is an increased amount or if you notice a foul odor, excessive licking and difficulty urinating, then it may be that he has an infection either in the [urinary tract](https://www.petcoach.co/dog/condition/utis-in-dogs) or under the prepuce. Take him to your regular vet when they open for an examination and diagnosis. They will be able to provide appropriate pain relief and treatment.

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Thanks for using Petco Pet Education Center, formerly Petcoach! The discharge you are seeing is a normal substance that unneutered males produce to lubricate the penis. Sometimes the discharge comes out of the prepuce. The production of this substance is decreased when pets are neutered. You can continue to wipe it off it noted but no treatment is needed. Kisses to Simba!

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What is this yellow discharge on my dog's penis he keeps licking?

Without pictures it is difficult to say what this is for sure. This could be smegma, which is the normal yellow discharge that is seen coming from a male dog's prepuce, which is a natural lubricant for the penis inside the prepuce. If it is not liquid at the prepuce you are seeing and a pustule, this could be infectious. If you could provide photos and post again it may help determine what this is exactly. Otherwise, a veterinarian should take a look at this so that the most appropriate diagnostic and treatment recommendations can be made. I hope this helps! Please let me know if you have any other questions or concerns and I would be more than happy to help you further.

Updated on September 23rd, 2025

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