The Blue Buffalo Wilderness High Protein, Natural Adult Large Breed Dry Dog Food is an evolution of your dogs formula with more salmon than ever, plus wholesome grains. Made with real salmon, this high protein dog food features real salmon to help build and maintain lean muscle mass. The Blue Buffalo Wilderness High Protein, Natural Adult Large Breed Dry Dog Food is also rich in antioxidants, vitamins and minerals to support immune system health, life stage needs and a healthy oxidative balance.