Inspired by the diet of wolves, true omnivores whose endurance is legendary, BLUE Wilderness Senior formula is a grain-free, protein-rich food that contains more of the delicious chicken your dog loves. Plus, it's formulated specifically to help meet the important needs of dogs in their senior years. Blue Wilderness Senior Dog supports healthy muscle maintenance, joint health, immune system health, energy to stay active, healthy skin & coat, and strong bones & teeth. Raw diets are less convenient to prepare than BLUE Wilderness. What's more, with raw diets you typically need to provide additional supplements to ensure what you're feeding your dog is nutritionally complete. | Blue Buffalo BLUE Wilderness Natural Evolutionary Diet Chicken, Senior Dry Dog Food | Size 28 lbs