Dear Jon,Welcome back to our Featured Creature series, where we share a creature whose evolutionary traits, special role within its ecosystem, or fun facts have captured our attention. This week we ask,Which creature is the largest terrestrial predator on the planet, has the most adorable cubs, and makes its own fresh water? Polar Bears!Polar Bear (Boar), Kaktovik, Barter Island, Alaska.Image Courtesy Alan D. Wilson.Wintry Beauties Polar