Hill's Science Plan Feline Adult Optimal Care Chicken cat food with all nutrients for adult cats from 1 year of age, important proteins, high meat content, new recipe  Hill's Science Plan Feline Adult Optimal Care Chicken cat food with chicken was developed to cover the nutrient and energy needs of adult cats aged between one and seven years. Packed with nutrients, Hill's Science Plan Feline Adult cat food will give your cat everything it needs to stay healthy, happy and strong.