Nutrition plays an important role in the treatment of kidney disease. That's why your vet will usually prescribe your dog a special diet food, such as Royal Canin Renal Dog. Royal Canin Renal Dog is specially developed to support kidney function in chronic kidney disease. The diet is extra palatable so that even dogs with a reduced appetite like to eat it. If your dog does not like these kibbles as much, you can try Royal Canin Renal Special Dog or Royal Canin Renal Select Dog.