While Myndi isn't a cat, she was diagnosed with kidney disease, tho not full blown kidney failure. She has been on prescription k/d for about a year and a half, and is doing very well considering that she is now 16. She takes no meds for it and does not require fluids. Once you get the k/d into Willy, you should notice a drastic change in the amount of water he drinks, and of course the peeing that goes with it.

Prayers that he does well and is with you for a good long time to come.