We have a cat in kidney failure and a dog showing signs of kidney problems. Kitty was given 2 months to live--over 2 years ago. What has helped the most is giving subqutaneous fluids (like iv's, only under the skin between the shoulder blades, not directly into the veins). It helps to flush built-up toxins out and makes up for some of the reduction in kidney function. sub-q's are very common, and according to our vet, many elderly animals can reap benefits from fluid therapy. Luckily, our cat is very calm and actually seems to like the whole process. I wouldn't put him through it if it stressed him out.