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My cat won't eat, use litter, and is lethargic. What's wrong?

Updated on September 23rd, 2025

Pet's info: Cat | RagaMuffin | Male | neutered

What do you guys recommend giving to a cat who hasn’t eaten anything or use the cat litter? I see him moving very little and he just sits down or sit in the corner and sleep. We’re worried about Kong’s well-being.

2 Answers

Most Helpful Answer

Dr. Melanie, BVSc MS

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on May 16th, 2020

Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question about Kong. When a cat doesn't eat, it's extremely serious. That's because if the cat goes long enough without eating (about 72 hours), they will develop a fatty liver. A fatty liver is fatal without treatment. The fact that he won't eat or use the litter box tells me he is quite sick or injured. I would consider his symptoms a medical emergency that cannot be treat at home. Please take him into a vet immediately. Best of luck.
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Related Answers from Veterinarians

  • Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on February 3rd, 2017

    This is extremely serious, and Tiger needs to see a vet immediately. When a cat doesn't eat for three days, they become prone to a condition called a fatty liver, which is fatal without treatment. He sounds extremely ill if he's hasn't eaten for five days or left your bed to use the litter box. This is a medical emergency, please take him into a vet now.

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    1Pet Parents found this answer helpful

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