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Why is my cat eating much less food for weeks but still acting normal?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 3 years and 10 months old | 10.471 lbs

For a couple weeks, my cat eats only a third of the usual amount of food. Last time it happened (two months ago), I went to the vet and suggested giving him vitamins for 10 days and went back to normal. He hasn’t changed his behavior other than that. He uses his litter box, plays and seems generally ok. The only difference there is, is that I changed his three-month pill for the stomach because he was throwing the last one up. What could be the problem? The vet didn’t suggest any exams.

2 Answers

Most Helpful Answer

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Answered By Sara Farmer, DVM

Veterinarian

Published on March 22nd, 2019

A decrease in appetite can be a sign of a number of diseases in cats ranging from food sensitivities and tooth problems to gastrointestinal disease to kidney dysfunction. Since this problem has reoccurred I would recommend rechecking with your vet - checking blood work might be helpful at this point.

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1Pet Parents found this answer helpful

Other Answers

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    Answered By Dr. Elizabeth

    Veterinarian

    Published on February 3rd, 2019

    There could be many different issues and then again, there could be no problem at all. Sometimes pets can go through periods of decreased appetite and increased appetite. Your best way to know if there are any problems is to have him checked by his veterinarian. Since he can’t talk and tell you, I recommend this option. Make sure to bring in a fresh fecal sample as well so that the doctor can check for any worms which may be causing a mild stomach ache. Hopefully everything checks out great! I hope this helps and please feel free to post any additional questions.

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