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Senior cat losing weight, eating less, diarrhea. What's wrong?

Updated On September 23rd, 2025

Pet's info: Cat | Siamese | Male | neutered | 10 years and 11 months old | 17 lbs

My cat has been losing weight and having intermittent diarrhea. Lately it has become more frequent. He is now eating less and drinking way more water. He doesn’t seem to be in distress. His nose is wet, he purs and cuddles. He meows like he is hungry, but then hardly eats. He also has loud gas while using the liter box. Idk what I should do because he normally doesn’t travel well. He gets sick in the car, pants, cries etc. He is almost 11 years old. He is an indoor only cat.

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on January 19th, 2018

Even though Mango doesn't do well with travel, I would definitely take him into a vet immediately. He will not be feeling well and is likely distressed even though he's not showing signs of it. Cats can be very stoic when ill, and think about how you would feel if you had frequent diarrhea, was losing weight, and hardly eating. He could have something serious causing his symptoms such as irritable bowl disease or cancer. He needs veterinary care now because senior cats can easily get dehydrated and frequent diarrhea is enough to cause dehydration. 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. Good luck, I hope this helps!

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