Chronic renal insufficiency cri is prevalent in dogs and can often manifest itself as anorexia lack of appetite royal canin renal special dry dog food is as a specially adapted diet for dogs with kidney disease that has been designed to appeal to pickier eaters the food can help to support kidney function and contains a special antioxidant complex as well as essential epa and dha and has a lower phosphorus content the foods adapted protein content helps to prevent overloading of the kidn