Eukanuba Mature & Senior• Lower in calories to help prevent weight gain• Small & Medium 27% protein 12% fat 7+ yrs• Large 26% protein 10% fat 5-6+ yrs• Lamb & Rice 27% protein 12% fat 5-7+ yrs• but, not a weight loss diet so any underweight dogs will not lose weight• Glucosamine and Chondroitin for the joints• FOS for the digestive system• GLA (borage oil) extra skin and coat help• Vitamin E for immune support• L-carnitine for fat metabolism and muscle tissue