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My male cat has a swollen penis. Is it a urinary blockage or FLUTD?

Updated On September 23rd, 2025

I already asked u why my cat Storm has a swollen penis. U send me a thing on why cats meow. Do I get an answer on not? Is it that u don't know or what

4 Answers

Most Helpful Answer

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Answered By Christie Long, DVM

Veterinarian, Certified Veterinary Acupuncturist

Published on June 7th, 2016

From reviewing your previous question on Storm I believe that the answer that was provided regarding why his penis is swollen was about the potential for urethral blockage. Male cats are prone to a condition called Feline Lower Urinary Tract Disease (FLUTD) that can cause severe inflammation in the urethra, which we often see as swelling of the penis caused by their licking it. This is a serious condition that can become life-threatening if the urethra become partially or fully blocked, as they can't urinate. Your vet can check Storm for signs of this disease and recommend medications and/or food that will treat this condition.

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9Pet Parents found this answer helpful

Related Answers from Veterinarians

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    Answered By Lauren Jones VMD

    Veterinarian

    Published on October 1st, 2021

    It’s extremely concerning to me that Milo is only passing small amounts of urine, even though you aren’t seeing blood. When male cats only urinate small volumes, the first thing we worry about is a partial urinary obstruction or blockage. It’s also possible that he could be experiencing these urinary difficulties due to bladder stones or inflammatory issues (FLUTD - feline lower urinary tract disease). Male cats get urinary tract infections very infrequently, although it’s not impossible. Milo should be examined by your vet or an emergency vet urgently. If he is developing an obstruction, this is a serious, life-threatening issue, so it’s always best to err on the side of caution and look into these urinary issues immediately. Best of luck and I hope that everything goes well for Milo!

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    1Pet Parents found this answer helpful

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    Answered By Sara Farmer, DVM

    Veterinarian

    Published on November 20th, 2019

    This is very concerning - I’d recommend having Angel examined by an emergency vet as soon as possible. This can be a sign of a urethral obstruction or urinary blockage which can be a life threatening emergency. It’s also possible that Angel has lower urinary tract inflammation or infection without a blockage, but since a blockage can be so serious it’s best to have a physical exam with a vet to rule it out.

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  • Published on April 12th, 2017

    Your cat may have a serious urinary issue going on. If he does not seem miserable right now, is bright and alert and able to move around, and is not in or around the litter box straining to urinate and meowing over and over again, you might be ok to wait until the vet is open. If he goes in to the litter box and vocalizes, or strains like he is trying to pee but can't, or seems sick in any way, he may have a blocked bladder and this is an emergency. Neutered males cats, especially ones that are overweight, are at risk of having urinary tract disease, and the worst thing with this problem is that sometimes small bladder stones can collect in the urethra/penis and they are unable to urinate. This makes them very sick and ultimately the bladder can rupture, leading to death. Or, he may still be able to urinate a small volume, enough to keep the bladder from getting huge, but still be very painful and in need of medication. You are going to have to take him in as soon as you can for X-rays and blood work. They may need to catheterize his bladder under sedation and hospitalize him on IV fluids. Good luck!

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    1Pet Parents found this answer helpful

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