查证:长颈鹿是怎么走路的?
(2009-12-02 14:13:59)
标签:
杂谈 |
分类: 妈妈絮语 |
好几天前的一个晚上,散步的时候,安妮说起长颈鹿是怎么走路的,同手同脚同边走,并模仿着长颈鹿走路的样子,当时爸爸妈妈笑成了一团。。。说实在的,真没有注意过这个问题,于是说回去查证。今天想到了,赶紧验证一下。
百度查的:
在野外,长颈鹿以树叶为食,一头长颈鹿每天能摄入63公斤的树叶和嫩枝。长颈鹿行走的步态悠闲。行走时一侧的前后肢向前挪动而另一侧的前后肢着地。这是大型四足动物常用的运动方式,比如大象亦采用此方式挪步行走。但是长颈鹿遇到敌害攻击的时候则能以60公里的时速奔跑,能和我们的小轿车跑得一样快呢!但是长颈鹿的心脏过小,使得它不能做长距离奔跑。当受到威胁时,长颈鹿的防御方法是用它的脚猛踢敌人的要害地方,踢一下足以使狮子的头骨踢碎。长颈鹿每天的睡眠时间是所有哺乳动物中最短的。一般只有20分钟到两小时之间,你猜它是怎么睡觉的吗?它能够睁着眼睛睡觉。在每一只长颈鹿的头顶,都会长出短角,大多数长颈鹿都只长出一对角(也有长3、4、5只角的,很稀有),是玩耍时用的,真正打架的地方是它那一双有力的后腿,这四条腿可以将狮子、豹子这些猎食者踢翻在地上,有一些甚至还可以将猎食者踢死的情况也会出现。
在wikipedia查的结果:
Giraffes also have slightly elongated forelegs, about 10% longer than their hind legs. The pace of the giraffe is an amble, though when pursued it can run extremely fast, up to 55 km/h.[17] It cannot sustain a lengthy chase. Its leg length compels an unusual gait with the left legs moving together followed by right (similar to pacing) at low speed, and the back legs crossing outside the front at high speed. When hunting adult giraffes, lions try to knock the lanky animal off its feet and pull it down. Giraffes are difficult and dangerous prey. The giraffe defends itself with a powerful kick. A single well-placed kick from an adult giraffe can shatter a lion's skull or break its spine. Lions are the only predators which pose a serious threat to an adult giraffe.
哈,真是这样的。看来爸爸妈妈也要加强学习。再来补充一段:
Sleeping
The giraffe has one of the shortest sleep requirements of any
mammal, which is between ten minutes and two hours in a 24-hour
period, averaging 1.9 hours per day.
人类要是也这样睡眠时间,该多好。

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