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Why is my cat vomiting yellow, not eating, and losing weight?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered

my cat has yellow vomit and his poop is either solid or runny ,he has been wormed and he has lost some weight over the last 3 days as he is not eating much!

1 Answer

Most Helpful Answer

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Answered By Rebecca, DVM

Veterinarian

Published on April 1st, 2018

Thank you for using Petco Pet Education Center, formerly Petcoach. I recommend taking Ebony in for a veterinary exam. if he is loosing weight and continuing to vomit then something more than parasites is likely the cause. Anything from toxin ingestion, pancreatitis, lymphoma, inflammatory bowel disease or a GI blockage could cause the signs you describe. After a good physcial exam the vet may recommend diagnostic testing to see what is causing Ebony's illness. I hope Ebony is better soon.

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