Secrets in the Ice: Season 4, Episode 6

4 - 6: The Patagonia Ice Dragon

The Patagonian ice dragon, which isn't actually a dragon but an insect that has adapted to life on the frozen glaciers of South America's Andes Mountains, the only bug that lives on the Patagonian ice fields. Scientists believe that their bodies contain natural antifreeze, which stops their blood from turning solid amidst the bitter cold.