This touching comedy/drama, based on the novel by Garth Stein, is told from the perspective of Enzo (voiced by Kevin Costner), a golden retriever owned by race car driver Denny (Milo Ventimiglia). Not only is Enzo a steadfast friend to Denny, but also, eventually, to his wife (Amanda Seyfried) and daughter, all the while sharing his thoughts on the world around him.