Petco Text Logo
Petco Pet Logo
  • Two Easy Ways to Start Earning Rewards!

    rewards header
    Become a member today!
    Members-only pricing and offers, personalized care notifications, Vital Care points back on every purchase and more!
    Petco Pay LogoBecome a credit card member today!

    Earn 2X Pals Rewards points at Petco
    when you use Petco Pay!

    APPLY NOW
    Learn More About Petco Pay Benefits

Why is my cat not eating, drinking, lethargic, and losing weight?

Updated on September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered | 3 years and 8 months old | 6.7 lbs

Hello, my cat has not been eating as much as before or drinking water as much. He is being very lethargic and hissed and bared his teeth when I tried to call him. he has NEVER done that before ever.. I'm really worried as he also lost a lot of weight. He went from 5. 5kg to 3kg. that's a lot of weight to loose for a cat. he does eat wet and dry food. but not as much as before. he's a 4 year old domestic shorthair breed.

1 Answer

Most Helpful Answer

Dr. Melanie, BVSc MS

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on March 16th, 2019

I am worried about Yoda as well. From what you are telling me, he is showing you that he is sick, and he has lost a lot of weight. He needs to see a vet now. Please take him into an ER vet clinic; if there isn't one in your area, there will be a vet on call for emergencies. The information to reach that vet is found on a clinic's answering machine or website.
Vote Icon1Pet Parents found this answer helpful

Smart Picks for Smart Questions

Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Share

Styled arrow button