Senior dogs are best fed a diet rich in protein to promote lean muscle mass, yet limited in calories to promote a healthy body weight. With 38% richly nourishing protein, and a limited 19% low-glycemic carbohydrates, ORIJEN nourishes all senior dogs according to their evolutionary and biological needs. Unmatched by any other senior dog food, 2/3 of meats are FRESH (refrigerated, no preservatives) or RAW (flash-frozen, no preservatives), including the top 10 meat ingredients. 1/3 of poultry and fish are prepared at 90C from fresh chicken, turkey and fish to create a concentrated source of richly nourishing protein that cannot be supplied by fresh meats alone. Nutrient-dense WholePrey ratios of fresh meats, organs, and cartilage plus fresh whole fish and fresh whole eggs provide a natural source of virtually every nutrient your senior dog needs. Infusions of gently freeze-dried liver enhance flavour and palatability naturally, making ORIJEN deliciously tasty, even for fussy eaters.