Hill's Science Diet Large Breed Puppy dry food is specially made with an optimal level of calcium for controlled bone growth, a unique developmental need of large breed puppies. Formulated with vital nutrients to support 5 essential building blocks for lifelong health. Balanced minerals for strong bones & teeth. DHA from fish oil for healthy brain & eye development. High-quality protein for building lean muscles. Breakthrough blend of prebiotic fibers to support the gut microbiome and digestive system. Vitamin E and Omega-6s for healthy skin & coat