Purina ONE True Instinct With Real Salmon and Tuna Natural With Added TRUE PET PUPPY FOOD 40LBS Nutrena True Puppy Food YouTube Shop for Nutrena True Dog Food at Tractor Supply Co.. Nutrena True Puppy Food is specially formulated to give puppies the protein and energy needed to grow healthy and strong. A healthy start begins with DHA from fish oil to support brain development plus calcium and phosphorous for proper bone development. For better immunity support and digestion, its packed with research proven TruMune power. Fit for all life stages, each serving meets the unique needs of growing puppies as well as pregnant or nursing dogs. Features: TruMune power is a research proven pet food ingredient that works to provide everyday immune protection and support digestive health which fosters your pet's healthy activity and mobility. Nutrena's patented Opti Cook process and added prebiotic provide special digestive support DHA from fish oil supports your puppy's developing brain. Calcium and phosphorus support healthy bone development Guaranteed levels of Omega 6 & 3 fatty acids support skin and coat health