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Why is my kitten suddenly lethargic, not eating or drinking?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | unneutered | 4 months and 14 days old | 8 lbs

My normally hyper kitten is very mellow and just laying around. He won't eat or drink. He's been this way since this afternoon

1 Answer

Most Helpful Answer

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Answered By David Darvishian

Veterinarian

Published on September 12th, 2017

Hi and thanks for using Petco Pet Education Center, formerly Petcoach! Sorry to hear about Lola. Even though you may not notice any signs, he may be experiencing the beginning of an upper respiratory infection. Early signs include fever (lethargy), decreased food/water intake, decreased activity, sneezing, squinting of one or both eyes, difficulty swallowing from inflammation, etc. Other causes could include fever from another cause (often times we never know what causes it, called Fever Of Unknown Origin), pain, intestinal parasites, recent vaccines or treatments, etc. I would advise that your veterinarian take a look at Lola as soon as possible to assess what is going on. Your vet can take a detailed history and do a thorough physical exam. They may advise diagnostics which could include fecal/blood tests, x-rays, urinalysis, etc. Once a diagnosis is made or suspected, a sound treatment plan can be discussed and implemented. Fluids, electrolytes, antibiotics, pain medicine, dewormer, medicine for fever, etc are some of the possible treatments. Good luck with Lola

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