Petco Text Logo
Petco Pet Logo

Why does my senior cat have persistent diarrhea but a good appetite?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 14 years and 3 months old

My 14 year old male cat seems to have persistent diarrhea. He seems fine in himself and hasn't lost his appetite. I'm a little concerned.

1 Answer

Most Helpful Answer

Image profile

Answered By Lauren M. Jones, VMD

Veterinarian

Published on August 3rd, 2017

Poor Lucky! I'm glad to hear that he still seems to be acting and eating normally despite this ongoing diarrhea. Some possible causes of persistent diarrhea include parasites, inflammatory bowel disease, gastrointestinal cancers, liver disease, food allergies, among others. You can try transitioning his diet to a novel protein diet ( http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=34182 ) with one protein source and one carbohydrate source to limit the ingredients that he is exposed to. Mix his old and new foods together over 5-7 days, then exclusively feed a new diet for at least 8-12 weeks to determine if the change has been effective. Also adding a probiotic ( http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=21478 ) may be beneficial. However, if his diarrhea continues or worsens, Lucky will need to go to his vet for further evaluation and testing. I hope that all goes well!

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