Description NutriSource Large Breed Puppy Chicken and Rice Formula provides super premium nutrition in a scientifically formulated easy-to-digest food designed for puppies of breeds that will mature at more than 50 pounds. This is formulated to provide proper nutrition for balanced muscular and skeletal growth in large and giant breeds avoiding joint problems later in life. NutriSource Large Breed Puppy contains specially adjusted levels of calcium and phosphorus matched with balanced protein, fat, carbohydrates and calories to supply large breed puppies the nutrition to grow and develop to fullest potential. Feed NutriSource Large Breed Puppy food to your Large/Giant Breed Puppy from weaning until your dog reaches it's mature weight and size, typically at about 18 months of age. At maturity, we suggest transition to NutriSource Adult or NutriSource Large Breed Adult food. New and Improved - made with organic selenium and organic zinc - no wheat.