Join National Geographic and naturalist Casey Anderson for some wild explorations in America the Wild. Casey camps out on an island to investigate aggressive wolves, rappels into a cave in search of vampire bats, comes face-to-face with a rare herd of Alaska's gargantuan moose, slices his way through 'Gator-Heaven' in the Florida Everglades and finally, goes into the heart of darkness to experience the unknown world of Yellowstone's Grizzlies at night.