CORE Puppy food has optimal calories and Docosahexaenoic Acid (DHA) puppies need for healthy brain, bone, and muscle development. CORE recipes are crafted based on the nutritional philosophy that dogs, based on their primal ancestry, thrive on a natural diet mainly comprised of meat. Our Grain-Free, Protein-Rich puppy food is packed with premium protein along with nutrient-rich superfoods and nutritional supplements to ensure your puppy has everything they need to thrive from the CORE.