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Senior cat vomiting, diarrhea, losing weight, but always hungry?

Updated on September 23rd, 2025

Pet's info: Cat | American Shorthair | Female | unspayed | 10 years and 3 months old | 4.5 lbs

Bee used to look for our hair bands for ponytails and eat them.as far as , we know she has not done this for a while,but all of a sudden we suspected worms so we treated her. Then about a month later she started throwing up,then diarrhea, very watery,vomit was yellow or brown,losing weight,see her bones but her stomach is fat,she's wants food all the time but then has diarrhea we gave her tuna cubes,pediolite. Won't drink it,and when she eats sounds like teeth are lose.

2 Answers

Most Helpful Answer

Laura Johnson VMD

Answered By Laura Johnson VMD

Veterinarian

Published on October 6th, 2017

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poot Honey Bee!!

I think Honey Bee needs to see your Vet today. Losing weight, vomiting and diarrhea in an older cat can be concerning. The sound you may be hearing when she eats is grinding of her teeth which cats can do when they are nauseous or have stomach issues.

Possible causes for her symptoms are: kidney failure, liver problems, an overactive thyroid (hyperthyroidism), diabetes, inflammatory bowel disease, cancer or possibly but less likely an obstruction (ate something that is stuck).

Most of the above can be easily diagnosed on blood work. Your Vet may want to take an X-ray of her belly as well.

I hope this helps and I wish Honey Bee the best!
Vote Icon1Pet Parents found this answer helpful

Related Answers from Veterinarians

  • Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on April 22nd, 2020

    It could be from the change in diet. Sudden changes in diet cause stomach upset. I'm concerned with how much Misty has been throwing up. I think it's best you take her into a vet immediately. I hope this helps!

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    1Pet Parents found this answer helpful

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