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Why is my male dog bleeding from his penis and had bloody diarrhea?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | 9 months and 7 days old | 33 lbs

My dog had extremely bad diarrhea and was also pooping blood yesterday and not today he had a small amount of blood come out of his penis. I was wondering if you had any odea what was going on with him.

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1 Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on January 21st, 2020

There could be a couple of things going on with Asher. If he's not 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 leptospirosis, bladder tumors, trauma, 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. While there, the vet can check out the bloody diarrhea. That could be caused by a GI illness, eating something rotten, a foreign body, or parvo.

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