Purina Pro Plan senior dog food delivering support for joint health and mobility (glucosamine and EPA for joint health and mobility) Live dog probiotics help promote gut microbiome resilience during naturally occurring stress Dog kibble in nutrient-dense, bite-sized pieces to make chewing easier for small dogs High protein dog food featuring high quality protein to help support strong muscles, including a healthy heart in a highly digestible formula for optimal nutrient delivery Dry dog food, including calcium, phosphorus and other minerals to help maintain strong bones and teeth