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What causes my cat's drooling, bad breath, and appetite changes?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | unneutered | 20 lbs

My cat is drooling and his breath stinks he is eating but not his normal schedule and his bathroom schedule is different also I just want to know what it could be?

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2 Answers

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on January 16th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Castiel! I wonder how old Castiel is? Causes for drooling and a decreased appetite can be from dental disease/rotten tooth, ulcers in the mouth from a virus or licking something caustic, kidney disease/other metabolic conditions that cause nausea or a foreign body in the mouth. I think it is best to have your Vet examine Castiel and take a good look in his mouth. I hope this helps and I wish you all the very best!

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Other Answers

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    Answered By Vanessa Yeager DVM MPH

    Veterinarian

    Published on October 29th, 2019

    Eating less, dropping food, and bad breath can all be signs of dental disease. He will need to see his veterinarian for an exam and to check his teeth and gums for signs of dental disease. Ocean may need a dental cleaning with your veterinarian if dental disease if found to be the cause. Kidney disease can also cause foul breath as urea builds up in the body. Some blood work with Ocean's vet can help determine if there are any underlying health issues such as kidney disease as a cause. I hope this helps!

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