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Why is my cat suddenly lethargic, not eating, and won't play?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | 17 lbs

My cat has been sitting up on the floor and hasn't moved for 2 hours he looks up and around I tried to give him a treat but didn't want it and then I tried to play with him with string but didn't move.

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3 Answers

Most Helpful Answer

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Answered By David Darvishian

Veterinarian

Published on November 27th, 2017

Hi and thanks for using Petco Pet Education Center, formerly Petcoach! Sorry to hear about Mittens. Abnormal behavior in a cat is often the first sign of problems. If this continues, you should have him evaluated immediately. Your vet can take a history, perform an examination, and then advise a diagnostic/treatment plan. Possible causes include pain, infection, inflammation, stress/anxiety, bite/scratch wounds if he was outside, among other things. Good luck and I hope Mittens bounces back to normal soon.

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Other Answers

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on April 27th, 2017

    Oh no, poor kitty! It sounds like he is lethargic and anorexic which can be caused by systemic illness, infection, inflammation, or injury. It is concerning that he won't move or eat and due to this, I would have him seen by a vet today. The vet can diagnose what is causing his symptoms so he can be treated.

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on February 17th, 2018

    Poor Link! Lethargy is a very general sign of illness, but it can be caused by systemic illness, infection, inflammation, or injury. Same with a decrease in appetite. It's concerning when a cat is both lethargic and losing their appetite, and these combination of symptoms requires a visit to the vet. The vet can diagnose what is causing them, and how best to treat him. Please take him into a vet today. Good luck! I hope this helps!

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