动物不为人知的小秘密，看看你都知道哪几个？
Each bear cub in a litter can have a different father.每个小熊的兄弟姐们几乎都是同母异父。
The tadpoles of the paradoxical frog are larger than the frog itself.
一种叫Paradoxical Frog的青蛙，它生的蝌蚪宝宝比它自己还要大。
A moose can feel a fly landing its antlers.
麋鹿可以感知苍蝇飞到它的角上。
The praying mantis has an ear between its legs.
螳螂的腿间有一只耳朵。
Turn a shark on its back and it goes into a trance.
如果能把鲨鱼的肚皮朝上，它就会发懵。
A domestic cat can outurn Usain Bolt.
家猫逃跑起来比博尔特还快。
Male lions sleep for twenty hours a day.
雄性狮子可以一天睡20个小时。
Hippos use their sweat as sunscreen.
河马用自己的汗做防晒霜。
Happy dogs wag their tails to the right, sad ones to the left.
狗开心时，尾巴向右摇。反之向左摇。
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