This formula is ideal for cats and kittens of all-life-stages. We use wild caught herring, anchovy and sardines as the primary source of protein. The full fish is used rather than heads and frames. Our Pacific Ocean Fish With Blueberries is rich in antioxidants, low in ash and magnesium. It is also free of peas, flax and chicken protein.Single Meat ProteinGrain, Gluten & Pea FreeLow CarbBlueberries Added for Urinary HealthyCOMPLETE PRODUCTION CONTROLGRAIN, GLUTEN & PEA FREEWILD CAUGHT HERRING, ANCHOVY & SARDINESVETERINARIAN FORMULATED95 % PROTEINFROM Wild Herring, Anchovy, & Sardines 5 % PROTEINFROM Vegetables 0 % FROM Grains