Animal Jam Watch videos, play games, and meet the newest animals! (AD) Buy the book! Bring out your inner mad scientist. Meet the Mammals! They're warm-blooded and hairy. Check out pictures, videos, and facts. Cheetah Fastest land mammal Lion SAVANNA KING KANGAROO CAN LEAP 30 FEET! River Otter LOVES TO SLIDE! Snowy Owl They're amazing hunters. Giant Panda They spend most of their time eating. Polar Bear They're strong swimmers. JACKRABBIT They can leap as far as 10 feet!