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Why does my cat have smelly poop, vomit, and not eat on and off?

Updated On September 23rd, 2025

Pet's info: Cat | Ragdoll | Female | unspayed | 7 months and 1 day old

Hello, I'm abit concerned about my cat. He's a ragdoll breed, he's around 9 months old. Ever since the start we've noticed he's a very smelly cat (letter tray wise) but we put this down just To him being a kitten or maybe just a little smellelier than most. But he seems to be going through a pattern of being really quiet, not eating, not himself and being sick for a couple of days and then suddenly he's fine and his normal perky self, this pattern has happened a couple of times now, plz help?

1 Answer

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on November 1st, 2017

Hi, Thanks for using Petco Pet Education Center, formerly Petcoach! Poor Murphy! Smelly stools could indicate either intestinal disease (inflammatory bowel disease, food allergies) or pancreatic disease (chronic pancreatitis or pancreatic insufficiency). Waxing and waning loss of appetite and vomiting can also indicate these things. I recommend considering changing his diet. I would avoid chicken, which is the most common allergic protein, and try either venison or an all fish diet. It might be best to discuss a prescription diet with your Vet to go big guns. I also recommend that when he is sick, have full blood work and a maldigestion/malabsorption profile (B12, folate, TLI, PLI) done. Be sure you have had a recent stool sample checked for parasites. If anything comes back abnormal consider an abdominal ultrasound to confirm the suspicion of underlying intestinal or pancreatic disease. I hope this helps and I wish you and Murphy the best!

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