Watch this cool video series! (AD) It's the Ultimate! Check out the book. Weird But True! Get fun facts about snacks. Bizarre facts Fill your brain! Weird But True! Get fun facts about birds. Weird But True! Get Fun Facts about the Planet. Weird But True! Get more fun facts! Watch more videos! Visit Nat Geo Kids on YouTube. Explorer Academy Play all the videos! Real or Fake? Can you tell what's real and what's fake?