Looking for an easily digestible cat food that doesn't add grain to your cat's diet? Hill's Science Diet Sensitive Stomach & Skin Grain Free dry cat food provides precise nutrition for digestive health & optimal skin care. This cat food made with natural ingredients uses prebiotic fiber to fuel a grown cat's gut bacteria and add balance to their microbiome. Natural, grain-free fiber help your cat's digestion and improve litter box cleaning There’s more to love with the new look of Science Diet. Some of our products also have new names, new kibble shapes & new formulas.