Firstmate's pacific ocean fish original uses a combination of wild caught herring, anchovies, and sardines. This limited ingredient diet is great for dogs with allergies and diet restrictions. Fewer ingredients makes this formula easy on digestion. The chicken fat used in firstmate pet foods is processed free of protein, eliminating the risk of allergies derived from chicken. Firstmate pacific ocean fish meal - original formula is formulated to meet the nutritional levels established by the aafco dog food nutrient profiles for all life stages.