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Why is my cat only pooping in the bathtub and not her litter box?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed

My cat will use her litter box to pee but will not poop in it. She will only poop in the bathtub no where else

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on July 11th, 2016

That has to be frustrating for you! Even if you’re absolutely certain that the problem is behavioral, you need to have your cat examined by the veterinarian to make sure there isn’t an underlying medical problem. There are a number of medical issues that could be causing your cat to feel uncomfortable about pooping in the box. If she experiences constipation, for example, she may associate the box with her discomfort and attempt to go somewhere else. If your cat is older and has arthritis, it may be difficult for her to perch on the litter substrate in order to eliminate solids. If you have a covered litter box, she may feel cramped in there while perching in position to poop. There are a number of intestinal problems (inflammatory bowel disease for example) that commonly result in cats defecating outside of the box. Sassy may experience cramping and the discomfort causes her to try to eliminate wherever she is at the time. She may also become so uncomfortable that she can’t make it to the box. I recommend taking her into your vet to rule out a medical reason behind this, and if it is ruled out, your vet can discuss behavioral techniques to get her to poop in her box. Take a sample of her feces with your for the vet to examine.

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