It's crucial that you consult a veterinarian. They are the only ones qualified to make this decision and to perform the procedure humanely and compassionately.
Here's why you need to talk to a vet:
* Diagnosis: Only a veterinarian can diagnose kidney failure and assess its severity.
* Treatment Options: There might be treatment options available to improve your cat's quality of life, even if a cure is not possible.
* Euthanasia: If euthanasia is the best option, a veterinarian can explain the procedure and answer any questions you have.
Remember, euthanasia is a deeply personal decision. Your vet can help you make the right choice for your cat, considering their comfort and well-being.
Please reach out to your veterinarian as soon as possible. They can offer support and guidance during this difficult time.