Watch Free Online HD Moviesjoy. On the outskirts of Yellowstone National Park is Paradise Valley, Montana, home to bears, wolves, elk, and an animal so secretive, few ever get to see it: the mountain lion. Wildlife filmmaker Casey Anderson became one of those lucky few after following the tracks of the elusive cat from his backyard into the world of a mother and her three cubs. It was the beginning of what would become a remarkable relationship that gave Casey a rare glimpse into the life of a mountain lion family and a new understanding of an animal we know so little about.