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My cat stopped eating, is vomiting, and very lethargic. Is it serious?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | 20 lbs

Adult cat 20lbs has stopped eating & drinking. Vomited a couple of times, depressed, no energy, very uncharacteristic behavior. What should we do? Vomiting is not hair balls. Possibly running a fever. Goes inside and outside but has no desire to go out. I fear dehydration, possibly ate something outside that was bad. Licking his lips but I can't get him to drink.

1 Answer

Most Helpful Answer

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Answered By Amy Poole, DVM

Veterinarian

Published on June 18th, 2017

Poor guy! It sounds like you should take Mr Meows-a-Lot in to see a veterinarian today as this sounds like an emergency. If he has a fever and is vomiting, I am very concerned that he may get significantly worse if you wait. Aside from an exam, he likely needs to have some blood work done to see if anything is abnormal that could indicate why he is so sick, as well as IV fluids. Cats usually will lick their lips a lot if they are nauseous, so he likely needs some anti-nausea medication as well.

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