Purina Pro Plan Sport All Life Stages Active 26/16 Formula Dry Dog Food, 37.5-lb bag; Awaken the greatness within your pal with the nutrition of the tPurina Pro Plan Sport All Life Stages Active 26/16 Formula Dry Dog Food. The formula is finely-tuned to promote an active lifestyle with 26% muscle-building protein from real chicken as the first ingredient, and 16% fat for energy. Enhanced with essential amino acids, vitamins, minerals, antioxidants, plus glucosamine for healthy joints and mobility, it provides a complete and balanced diet for dogs of all ages and activity levels, specially high-energy pups who love to play. The recipe is specially-formulated to help maintain lean muscle with everyday exercise, and is the perfect-size kibble for all dog sizes. Plus, it’s proudly made in the USA with no added artificial colors, flavors, or preservatives.