Nature: Snow Monkeys

With a societal structure as complicated as any that mankind has created, this troop of snow monkeys make their home in the frigid valleys of Japan's Shiga Highlands. They amazingly know where they stand with respect to rank and privileges. But when one young monkey warms up to and befriends their newest leader, a rare bond is formed and the leader emerges stronger and more ready than ever to lead his pack. 2014/color/60 min/NR/widescreen.