Hill's Science Plan - Adult Cat - TunaHill's Science Plan Adult Cat Tuna Balanced dry food for cats, with high quality protein and valuable antioxidants to maintain lean muscles. Your adult cat needs a diet that supports healthy digestion, a shiny coat, lean muscles and a healthy immune system. Hill's Feline Science Plan Adult dry cat food is made with high quality, easy to digest ingredients and is specially formulated to meet the energy needs of cats in their prime. Key Features: