Mission Animal Rescue Learn what you can do to help save threatened animals! (AD) Check out the book! Help save wolves. African Elephant Check out facts, photos, and videos. GRAY WOLF These wild dogs like to play! Lion See why these big cats rule. Polar Bear They're strong swimmers. Meet the Mammals! They're warm-blooded and hairy. Check out pictures, videos, and facts. Watch more videos! Visit Nat Geo Kids on YouTube. Explorer Academy Play all the videos! Support Our Work Learn how your donations can help endangered species. Cool Videos! Watch playlists on YouTube. (AD) GET THE BOOKS. Save animals, save the world!