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My cat's bum leaks smelly liquid when picked up. Are anal glands full?

Updated on September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | 2 years and 9 months old | 16 lbs

My cat keeps secreting very smelly liquid from him bum. This usually happens if I pick him up or we are play fighting. The smell is unbearable and then proceeds to clean the area. Is this an infection that he needs to go the vets?

2 Answers

Most Helpful Answer

Dr. Heidi DVM, CVA, CCRT, CVTP, CVSMT, CVCH

Answered By Dr. Heidi DVM, CVA, CCRT, CVTP, CVSMT, CVCH

Veterinarian, Certified Veterinary Acupuncturist, Certified Canine Rehabilitation Practitioner

Published on August 30th, 2017

It sounds like the odor you are describing is discharge from Ed's anal glands. Anal glands are a scent marking gland (as you could guess) since they produce a very strong odor. It is normal to animals to express anal gland material when very stimulated or startled. I have attached an article below that describes anal glands.
https://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=625
I had this occur with one of my cats when he was young, but it no longer is a problem. However, I would recommend having your vet examine Ed's anal glands to make sure they are not overly full. Sometimes cats will need their anal glands expressed intermittently to prevent them from expressing them. Good luck! Please let me know if that was helpful. Thanks for using PetCoach.
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Related Answers from Veterinarians

  • Answered By Amy S. Eutsey, DVM

    Veterinarian

    Published on February 24th, 2020

    Hello. It sounds as if your pet is repeatedly expressing his anal sacs. If this occurs frequently, I would recommend that you have your veterinarian check to see if they are overly full and need manually expressed. Some pets do require assistance with this. Thank you for using Petco Pet Education Center, formerly Petcoach

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    1Pet Parents found this answer helpful

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