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My cat died suddenly after panting & drooling. Was it painful?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 2 years and 9 months old

A month ago I found 2 yr old cat panting heavy and drooling excessively. Rushed her to vet who put her in an oxygen tent and drip overnight, treating her for shock. They suspected she may have eatensomething poisonous but bloods were inconclusive. She was fine the nxt day and came home. Last week I found her dead lying on left side with tongue inside but black and 3rd eyelids red and covering lower half of eyes. No vomiting or physical injury. Pls what happened? Did she die slow or painfully??

1 Answer

Most Helpful Answer

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Answered By Dr. Heidi DVM, CVA, CCRT, CVTP, CVSMT, CVCH

Veterinarian, Certified Veterinary Acupuncturist, Certified Canine Rehabilitation Practitioner

Published on July 16th, 2018

I'm so very sorry for your loss of Rosie. There isn't any way to know what Rosie died from without an autopsy, but the most common cause of sudden death in young cats is heart disease. The signs you described seeing a month ago may have been due to an episode of heart disease that she recovered from. Unfortunately, there often isn't any way to know that a cat has heart disease without performing an ultrasound of the heart. Many of these cats never have any heart murmur or any other signs of disease until they die. I'm so very sorry for your loss of Rosie, but that type of heart disease is generally a very fast death and is not treatable even if caught early, so I don't think there is anything you could have done differently.

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