when dogs have kidney disease their bowel movements can become unpredictable ( loose or constipated) and also their immune system function can be lowered. Probiotics in pets and humans help keep the immune system healthy and strong. A diet of lighlty cooked ground lamb ( 2-3 minute small meatballs)and overcooked soft and mushy sticky rice is more optimal to having less food allergies and easy to digest. Dogs with kidney problems develop high phosphorus in the blood from eating too much eat. Choose a non-allergenic meat like Lamb can help keep your dog healthy or buying a food for dogs with kidney problems like "KD Diet" is also helpful.