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My dog's penis has green discharge. Is it a sign of infection?

Updated On September 23rd, 2025

Why is there green discharge coming from my dog's penis?

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4 Answers

Most Helpful Answer

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Answered By Julia Henwood

Certified Veterinary Nurse

Published on June 14th, 2015

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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115Pet Parents found this answer helpful

Other Answers

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    Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

    Veterinarian

    Published on September 12th, 2016

    Thanks for your question. Small amount of green liquid or discharge may be completely normal (that is a secretion called smegma). Excessive amount could be caused by an infection of the external genitalia or a deeper urinary tract infection. a check up and possibly urine analysis would be absolutely needed to determine the underlying nature of it and treat appropriately.

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    Answered By Makenzie Kurth, DVM

    Veterinarian

    Published on January 28th, 2019

    Thanks for using Petco Pet Education Center, formerly Petcoach. The green smegma from the prepuce is very common in the in tact male dog and almost always nothing to worry about. If it is coupled with frequent or bloody urination, straining, or excessive licking, that may be more of a concern. The lethargy though, concerns me. If he is still lethargic by morning, it's time to see the vet for a good exam and some testing if needed. Best wishes to you and Brian!

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    7Pet Parents found this answer helpful

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    Answered By Dr Stafford, BVetMed, MRCVS

    Veterinarian

    Published on July 15th, 2017

    It looks lika a little bit of urine or smegma. Some discharge is quite normal, but if there is a lot of it, its very smelly or he seems irritated down there he may a little infection and need antibiotics.

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