Applaws Cat Tuna Fillets with Prawn in Broth. Applaws Tuna Fillet with Prawn in Broth contains nothing more than the ingredients listed and is a 100% natural complementary pet food for adult cats. ? CompositionTuna Fillet 52%, Fish Broth, Prawn 23%, Rice. Analytical ConstituentsProtein 14%Crude Fibre 1%Crude Fat 1%Crude Ash 2%Moisture 82% AdditivesNone