Dogs are ancestral carnivores, so their Biologically Appropriate diet is rich and varied in whole animal ingredients. ORIJEN Senior recipe is crafted specifically for your senior dog to help them stay healthy by supporting lean muscle mass and weight maintenance. With rich inclusions of Wholeprey animals, ORIJEN dog food is made with the most nutrient-dense, succulent parts of the prey to deliver the nutrition dogs need. With 85%* quality animal ingredients, this diet is beyond comparison.