Petco Text Logo
Petco Pet Logo

My cat overeats and drinks lots of water when hungry. What's wrong?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered

I have 2 cats. One is "normal"....The other would over eat if I let it...and when it doesn't have food, it drinks crazy amounts of water to get full... I can't take the water away because the other cat won't have any. What can I do?

1 Answer

Most Helpful Answer

Image profile

Answered By Menolly Cote, DVM, CVA

Veterinarian, Certified Veterinary Acupuncturist

Published on July 20th, 2017

I'm sorry to hear of your concerns with Master Shake. Excessive appetite and drinking can be indicative of a medical issues such as diabetes or hyperthyroidism. I would recommend that you have Master Shake seen by your veterinarian to ensure there's not an underlying medical condition causing this vehavior. Your veterinarian may recommend blood work to better determine if there is a problem. If Master Shake is deemed healthy you may need to begin meal feeding the cats so that you are able to portion out their meals and separate them to ensure the other cat is able to eat normally. You should not limit water for either cat.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

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

Sponsored