Male Dog Penis And Sheath Discharge

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The phone call started in an ordinary way, “Dr. Randolph, I need to make an appointment for Gus.”

A quick glance at Gus’ file in our computer system showed he wasn’t due for a routine visit, so I inquired of his owner about possible problems as a reason for the visit.

“He has a yellow-green discharge from his penis.”

I closed the appointment book, and pressed F1 on the keyboard, sending the computer software back to the Main Menu.

“No appointment needed,” I explained to Gus’ master. All male dogs have a yellow-green discharge. It’s actually coming from the sheath, not the penis. Quantity can vary from undetectable to a drop, but it’s all normal.”

The material, which looks much like pus to the naked eye, is actually made of cells and lubricant fluid in the prepuce that surrounds the penis inside its protective sheath. It has a pungent, acrid smell and will sometimes be noticed where a male dog has lain.

Discharges from the sheath with other characteristics, such as blood, or a large volume of material that resembles pus, would be a cause for concern.

As for me, I’ll just have to wait for a big, sloppy Gus-kiss until another day.

See you tomorrow, Dr. Randolph.

343 Comments

1. My boy has this now, only noticed in the last week. No redness or swelling but it does smell similar to what comes out of his anal gland. Is this normal as well ?

   • I would never think of the two odors as similar, but, we all perceive smells and tastes differently. If he’s otherwise happy and healthy, I don’t imagine you have to worry. Merry Christmas! Dr. Randolph.

2. Can anything be done about the smell that comes from the fluids.?

   • I find that a semi-moist alcohol swab helps to minimize it. Don’t over-do the amount of alcohol! Thanks for reading, Dr. Randolph.

3. I wanted to ask some fluid is coming from my dog’s penis or sheth idk it’s kinda yellowish and clear and it’s smells like pee and yeah the quantity is big not too big but yes and yeah I forgot to mention that he has stones In his bladder

   • Stones can sometimes lead to incontinence, and, it the worst cases, life-threatening urethral obstruction. Are these being dissolved by diet? Is it working? Alternatively, is there surgery scheduled? What you’ve described warrants VERY close observation. Thanks for reading, and stay in touch, Dr. Randolph.

4. Thanks for this! Forgot to ask my vet this the other day. Never had an unfixed male dog before so this was new to me. Wouldn’t think anything of it except that greenish yellow color made me suspect infection. We were thinking of not getting him neutered but if it would help this I think we will. Plus he has an undecended testicle and the vet said neutering him may prevent řthat from causing issues as well. Though I’m not sure specifically the issues he was referencing. Could you maybe answer that?

   • Cryptorchidism makes neuter surgery NOT optional; a requirement. Read this article to understand why. Thanks for reading, Dr. Randolph.

5. My 15yr old American Hairless Terrier began a yellowish discharge about a week ago. It’s in very small amounts, he isn’t licking, it doesn’t smell – just making sure all is okay or should I take him to his vet?

   • I quote from the article, “All male dogs have a yellow-green discharge. It’s actually coming from the sheath, not the penis. Quantity can vary from undetectable to a drop, but it’s all normal.”” However, should anything change and he doesn’t feel well, be sure to see your pet’s doctor. Thanks for reading, Dr. Randolph.

6. My senior dog woke up ok with dry material over his legs and surrounding areas that his penis touches when he is sleeping and then noticed a white-greenish discharge from his penis. He is neutered. Then, while I was inspecting him ( he has sensitive skin), he dropped its discharge about 12 hrs later. I cleaned his penis, and he smeared the lapel towel a little bit. The discharge is odorless, and I touched all of his body, and he does not seem to have any discomfort. He appears fine and peeing normally. What to do?

   • If it relapses I’d certainly have his doctor look at it. Thanks for reading, Dr. Randolph.

7. My 10-year-old dog is discharging a lot of white/greenish substance. He even dripped onto the floor and all over his belly area. It doesn’t smell bad and he is not licking it. What should I do?

   • I detect a high level of concern, and I’m keying on the phrase “dripped onto the floor and all over his belly area.” Get his doctor to check this out, then, write back and let us know what he says. Thanks for reading, Dr. Randolph.

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