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Why does my cat throw up occasionally but seems perfectly healthy?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 2 years and 6 months old | 9 lbs

Hi, my cat, Jiji, keeps sporadically throwing up. She's eaten blue buffalo since she was a kitten and in the last year I've changed from the hairball formula to the sensitive stomach formula and, every once in a while, she'll throw up. Her personality hasn't changed (she's still as hyper as ever) and she paces herself fairly well when she eats (sometimes it takes her the entire day to finish her food.) Any ideas would be more than welcome. Thank you!

1 Answer

Most Helpful Answer

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Answered By Amber Da Silva, DVM

Veterinarian

Published on November 15th, 2017

Hello and thanks for using Petco Pet Education Center, formerly Petcoach! There are many different reasons why cats will vomit periodically. It could be an allergy or sensitivity to the food, to inflammation anywhere in the GI tract, pancreatitis, liver or kidney disease, and many more. These cases can be extremely frustrating and take lots of testing to figure out because of this. The first thing I recommend is screening blood work to look for organ dysfunction that could lead to vomiting. In the vast majority of cats who are acting normal other than the vomiting, the blood work is usually normal. X-rays are also performed to look for any obvious change in organ shape or size and to look for obstruction, masses, etc. Beyond that, the testing gets more involved and typically involves an abdominal ultrasound. Sometime this can give you an answer. Other times the only way to confirm a diagnosis is through biopsies of the affected organs. The other thing that is commonly recommended is a change in diet. If there is an ingredient that she is sensitive to, we want to try to eliminate it from her diet. This is best done with a prescription diet because over-the-counter diets can be contaminated with ingredients that are not on the label. Food trials need to be done for at least 6 to 8 weeks and they can't eat anything else during this time. If the vomiting resolves with the new diet, I recommend keeping her on that diet long-term.

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