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My older unneutered dog has a swollen, bleeding anus. Is it prostate?

Updated On September 23rd, 2025

Pet's info: Dog | Golden Labrador | Male | unneutered | 11 years and 3 months old | 75 lbs

Hi, I have a dog Billy who has a swollen / protruding top of his anus. He has been intermittently bleeding, i noticed this today - he bleeds after going to the toilet. In the last month when walking he has wanted to go to the toilet frequently and struggles to pass waste. He doesn't appear to be sick or irritated / in pain. I am thinking that i will take him to the Vet tomorrow but would appreciate your opinion. Thanks, Matt Wright

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1 Answer

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Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on May 12th, 2018

This is probably a prostate disease (cancer or infection), this is common in unneautered older dogs, the vet will check the prostate, if it is enlarged he will need to have an ultrasound or CT done to find out if it is a cancer or an infection, he will need to be neutered ASAP.

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