00:00Australia is the native and sole home of kangaroos, thanks to a combination of geographic
00:05and evolutionary factors throughout history. Around 100 million years ago, Australia separated
00:12from the rest of the continents, becoming a giant island isolated in the middle of the oceans.
00:17This early geographic isolation prevented the arrival of placental mammals and large predators,
00:23giving marsupials, led by the kangaroo, the opportunity to evolve, thrive, and adapt without
00:30significant competition. Over time, and with the continent's increasingly arid climate,
00:36the kangaroo developed its signature hopping method using its powerful hind legs,
00:40a system that absorbs and re-uses energy just like a spring. This made it the most energy-efficient
00:47creature for searching for food and water in such a harsh environment. Cementing the kangaroo as a
00:52unique icon tied exclusively to Australia.
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