Our prayers for Dexter. My Jessie was in the ER with renal failure. Her numbers got a lot better and she came home with me after a week. After that she needed a special diet and treatment but she lived a quality life for another 18 months. She was an older dog, though. There is a good deal of info on the web about CRF and dogs. One website that helped me was
DogAware.com Health: Kidney Disease in Dogs