AApplaws Cat Senior Tuna Fillet with Sardine. Applaws Senior Tuna Fillet with Sardine contains nothing more than the ingredients listed and is a natural complementary pet food for senior cats. Composition Tuna Fillet 35%, Sardine 17%, Rice Flour, Vegetable Gelling Agent. Analytical Constituents Protein 10% Crude Fibre 0.1% Crude Fat 2% Crude Ash 1% Moisture 85% Additives None