Small dog food, big benefits. Hill's Science Diet Sensitive Stomach & Skin Small & Mini Adult Dry Dog Food is a dog food for small & toy breed dogs that provides optimal digestive health while nourishing their skin. This sensitive stomach dog food has protein as the first ingredient and provides clinically proven antioxidant benefits for small and miniature breeds. This dry dog food made with natural ingredients is formulated with decades of cutting-edge research to be a great-tasting dog food small dogs can truly enjoy!