欢迎光临(天龙影院-http://www.678mao.com/)，本站影片皆为高清片源，如果您喜欢本站，请记得介绍你的朋友一起来看哟
　　Despite needing 18-21 hours of sleep a day , koalas are still capable of startling displays of energy, agility and aggression--especially around mating season. Get a closer look at the surprisingly rich and unexpected hidden lives of these iconic Australian marsupials in their natural habitat.