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Why do my cats get diarrhea after eating high-protein dry food?

Updated On September 23rd, 2025

Pet's info: Cat | Turkish Angora | Female | 10 months and 16 days old

My two cats are experiencing diarrhea when eating dry food. Each of them has it like half an hour after eating. My vet gave them a “gastrointestinal enhancer” and antibiotics, and they worked for a while but then the problem still persists. They complain of no other symptoms and live indoors normally. They’ve been vaccinated. They eat mainly a dry food containing about 30-32% protein, could that much protein content affect their digestive system? Thanks

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1 Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on March 17th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Yes, the protein content or the TYPE of protein may be causing an upset stomach. I would change food brands or change to a different protein, for example if the current food is chicken based change to an all fish or venison or duck or beef. I would not feed a food that is causing diarrhea. Ask your Vet for a prescription gastro-intestinal food to feed until their stool is normal then purchase a different food to start once their stools are normal. I hope this helps and I wish you all the best!

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