FirstMate Grain Friendly Large Breed & Large Breed Puppy formula uses grass fed lamb from Australia (without added hormones or antibiotics), wild caught herring, anchovy, sardines, and wholesome, digestible grains as healthy sources of protein. Their Grain Friendly category is free of corn, wheat, soy, potato, and peas. This recipe is designed to support the growth of a healthy puppy and is also appropriate for adult dogs.