I have a 12 year old lab that has chronic kidney disease. Unfortunately, there is not much that can be done since the kidney's don't regenerate. Low phosphorous is more important than protein. I also give my dog fluids a few times a week. The canned food has more water in it, so if you can get her to eat canned it would be better than the dry. Good luck - it is a difficult disease since it cannot be cured. Check the internet also - you will get a lot of info from there.