Keep your furry friend at the top of his game with Purina Pro Plan Chicken & Rice Formula. This nourishing food for senior dogs is formulated to help promote memory, attention and trainability in dogs seven years and older. It features real chicken as the very first ingredient as well as enhanced botanical oils to deliver highly specialized nutrition. This senior dog food is fortified with live probiotics to provide digestive and immune support for your pet pal. It also contains glucosamine and EPA—an omega-3 fatty acid—to support joint health and mobility in your mini mate.