Petco Text Logo
Petco Pet Logo

My cat has gray poop, constipation, stopped dry food. What's wrong?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | 7 years and 1 month old | 16.3 lbs

My cat is fatboy he 15 pound male 8 year old his last bowel movement looks gray he is eating but he stop eating the dry food but he still eating shebe pate he poop every 28 to 40 hours we have been giving 1/8 miralax twice a day because if he was pooping every 42 to 56 hours and poop was small and harder he had a emena 6 months ago but he plays but not has active has normal he pees find 2 to 3 times a day should I be concern but he is eating but just stop eating dry food but will eat treats

This question includes photos that may contain sensitive content. Click to view.

View more to consider that the photos may include sensitive content.

1 Answer

Most Helpful Answer

Image profile

Answered By Rodrigo Roca, DVM

Veterinarian

Published on June 19th, 2019

Hello, sorry to hear about Fatboy. Occasionally changes in diet or medications may cause color changes in their stools. Alternatively, parasites may also cause them to have variations in feces color. If this continues, then an initial step would be to have his stool tested for parasites by your primary care veterinarian. Alternatively, given his constipation history, this color change may be associated with him being constipated and therefore if you note he is straining to defecate more often, then you should speak with your veterinarian about rechecking him in order to prevent his constipation from getting worse. Hope this helps and best of luck.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored