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Updated on September 23rd, 2025
Pet's info: Cat | Domestic Shorthair | Female | spayed | 7 lbs
I work at an animal shelter and I have come across a few different elderly cats whom have sticky notes from the vet stating they have chronic kidney failure and need foster or rescue. I am wanting to understand a bit more such as how long does a cat typically have after diagnosed with chronic kidney failure? And is it typically painful? Or do they pass in their sleep? I want to know more so I can do my part to ensure they have quality of life if no foster is found on time...
2 Answers

Answered By Vanessa Yeager DVM MPH
Veterinarian
Published on August 15th, 2018
Answered By Dr. Melanie, BVSc MS
Veterinarian
The life expectancy for cats with chronic kidney failure can vary from months to years depending on the severity of the disease. It has been found that cats who are on a kidney specific cat food live on average two years longer than cats who are not. It can be painful in that as the disease progresses the cat can experience vomiting, weight loss, and dehydration. No, they do not always pass in their sleep, and when a cat's kidneys are severely compromised, the kindest option is to have them humanely euthanized to prevent any further suffering. I hope this helps!
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