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My finicky cat has IBS, diarrhea, and poops outside the box. What to do?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | neutered | 6 years and 5 months old | 13 lbs

Hi. My 6 year old cat has been pooping outside of his litterbox. We have been to our vet a few times and she seemed to think he has IBS and ordered perscription food. We tried it but he is very finicky and would not eat it. His stool is frequently diarrhea or on the loose side and very smelly. Do you have any suggestions of what else we could try for his stool. We also had tried perscription medicine prior to the food but that constipated him. I would even cook for him but he wont eat human fo

1 Answer

Most Helpful Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on January 31st, 2020

If you haven't already, a food trial on a different food that Yoda will eat (that isn't prescription) may help rule out any food allergies that could be triggering his symptoms (chicken, egg, and fish allergies are common in cats). Adding in a prescription probiotic supplement may also help with gut flora and firming up stools, and can be provided by your vet. If he didn't like the prescription food, trying a different version of it (IE the wet form instead of kibble) may also entice him to try it.

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