the laughing kookaburra. some size diversity now. the pigmy glider, is about the length of a piece of gum. but look at this bat. the flying fox bat. those are three-foot swings that can move these animals along at 30 miles an hour. now some sit around all day guys. the central bearded dragon whose color changes over the hours of the day to keep his body temperature steady. and the thorny devil. the tongue does most of the work. watch the feet. 1,000 amps sants swallowed in a single session. yes, there are dingos. the largest land predators making themselves at home in the wilderness that is not just kangaroos and koalas. john donvan, abc news, washington. >> "destination wild" sunday nights on nat geo wild. thanks for watching. check out the "nightline" facebook page for some of your favorite highlights this week. from women giving birth in the woods to amazing six-second tricks. tune into "good morning america" for more, and good night. have a great weekend.