They're warm-blooded and hairy. See pictures, watch videos, and get facts. African Elephant LARGE AND IN CHARGE Cheetah FAST RUNNER Lion SAVANNA KING It's World RHINO Day. Celebrate with pics and facts. GRAY WOLF These wild dogs like to play! MOUNTAIN GORILLA They eat a lot! BLUE WHALE THE EARTH'S LARGEST ANIMAL HIPPOPOTAMUS BORN UNDERWATER! Polar Bear ADAPTED TO THE COLD Bottlenose Dolphin TALKS WITH CLICKS KANGAROO CAN LEAP 30 FEET! Raccoon NICKNAME IS RINGTAIL We've got snakes and lizards galore! Get facts and watch videos about these cold-blooded creatures. GILA MONSTER EATS ONCE A YEAR! NILE CROCODILE ARMORED TANK King Cobra A snake with bite! Hairy Frogfish Spines help this fish hide. Red-Bellied Piranha Mean—or just misunderstood? Seahorse LOOKS LIKE A TINY HORSE! Something’s fishy! Watch videos, see pictures, and get facts.