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My unneutered dog has reddish penile discharge. What should I do?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | unneutered | 7 years and 11 months old | 30 lbs

Hello doc My dog had a swollen hind leg wich has improved very much after a week. We have been taking him to vet. But since the time hez leg is swollen there has been light REDDISH penile discharge.It's not always. Only seen just 1 or 2 drops only in morning. He's not licking hes penis except very rarely. We don't let him go with other dogs now. Is it because of this that he has this rare penile discharge ? However hes on lasix coz of swelling. Hes activities are very normal and urine normal

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1 Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on October 8th, 2017

This penis discharge isn't as rare as you would think. I see that Scooby isn't neutered. In dogs who aren't neutered, prostate problems are a very likely cause of bleeding from the penis. These problems include benign prostatic hyperplasia, prostatitis, and prostate cancer. The bleeding could also be caused by a UTI or bladder stones. I would take him into your vet today for an exam. Your vet can do a rectal exam to see if his prostate is enlarged, and can do x-rays, routine blood tests, and a urinalysis to see if he has a UTI or bladder stones. If he does have a problem with his prostate, neutering him is one of the recommended treatments. I hope this helps!

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My dog is dripping blood from his penis area, he does not seem to be feeling ill, and he is not licking it. He did have some loose stools this week.
I see that your dog is not neutered - I'm not sure how old he is, but in middle-aged or older unneutered males it is common to see blood dripping from the penis as a symptom of an [enlarged prostate](https://www.petcoach.co/dog/condition/prostate-enlargement/). That is normally the first thing that I would check out in a dog with this problem. Other possible causes include an injury or tumor on the penis or the penile sheath, a bladder or prostate infection, bladder stones, kidney disease, or even a systemic bleeding disorder. I would recommend taking him to a vet for an exam - they will probably want to collect a urine sample for testing, check his prostate during a rectal exam, and examine his penis closely outside the sheath to look for any problems. From there, x-rays and ultrasound can be used to look at the prostate, if needed. If the problem is due to prostatic enlargement, this can normally be improved with [neutering](https://www.petcoach.co/article/benefits-of-neutering-castr
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My 9 year old chiwawa is dripping light color blood from his penuis, and milky stuff. His urine stinks with a different oder What could it be and what treatment is available.
I see that Pappy Fox isn't neutered. In dogs who aren't neutered, prostate problems are a very likely cause of bleeding from the penis. These problems include benign prostatic hyperplasia, prostatitis, and prostate cancer. The bleeding could also be caused by a UTI or bladder stones. I would take him into your vet today for an exam. Your vet can do a rectal exam to see if his prostate is enlarged, and can do x-rays, routine blood tests, and a urinalysis to see if he has a UTI or bladder stones. If he does have a problem with his prostate, neutering him is one of the recommended treatments. Best of luck.
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My male border collie is 7 years old he has not been neutered and I noticed he is seeping blood from his penis it looks normal in colour and is pink he has some kind of leakage discharge clear sometimes yellow and I am concerned he keeps licking it h
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