Description www.pbs.org A red fox shows its ingenious method of catching rodents that it can hear - but not see - beneath the snow. Join NATURE for a breathtaking look at wintertime deep within America's first national park. Christmas in Yellowstone airs on PBS Sunday, December 20, 2009 at8pm (check local listings) and is part of the 28th season of the Peabody and Emmy award-winning series produced by Thirteen in association with WNET.ORG for PBS. Major support provided by Canon USA Inc. For more information, visit www.pbs.org