春暖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.
秦伟
回复 :这是关于两种世界上最厉害的动物的故事，它们一起住在非洲河域。拥有巨大的下颚，尼罗鳄为了珍贵的领土而战。同时，河马争夺繁殖权。来自陆地和天空的掠食动物目标是刚孵出的鳄鱼和小河马。鳄鱼短片：由内而外尼罗鳄是一种高度复杂的掠食动物，它拥有先进的感觉武器装备。两位专家，格雷戈里艾利克森博士和保罗曼杰教授研究尼罗鳄的体内构造，揭露它们卓越掠食能力的真正来源，并且探索这世界上最可怕的掠食动物的秘密。
彭学斌
回复 :
丹吉布森
回复 :Dan Snow leads a team of adventurers on an epic journey across the Canadian wilderness, following in the footsteps of the 19th-century Klondike gold rush. Their mission? To find their own gold.
