图片来源：Flickr

33. Ducks like to surf. They've been observed riding tides and swimming back to ride them again.鸭子喜欢冲浪。它们曾被观察到冲浪，然后又游回去再来一次。

图片来源：Flickr

34. Some fish can recognize their owner's face.一些鱼可以认出主人的脸。

图片来源：Flickr

35. Wolves have babysitters. Members of the pack watch over the young when the parents go hunting.狼群内有保姆。在父母们出去猎食时，狼群的一些成员会照看小狼。

图片来源：Unsplash

36. Guinea pigs hop up and down when excited and apparently it's called "popcorning".豚鼠在激动时会蹦蹦跳跳，显然这就是“爆米花跳”。