Pages

Friday, 11 June 2010

The fastest animal - Cheetah (奔跑中的猎豹)



A cheetah is carnivorous and eats a variety of small animals. The cheetah is primarily diurnal, hunting in early morning and late afternoon. Since it depends on sight rather than smell, it likes to scan the countryside from a tree limb or the top of a termite mound. Other big cats chase only a few hundred meters: the cheetah chases 3.4 miles (5500 meters) at an average speed of 45 miles per hour (72 kilometers per hour). Stalking is as important as the fast sprint: usually it will creep within 50 yards (46 meters) of an intended victim before the final acceleration.

猎豹的生活比较有规律,通常是日出而作,日落而息。一般是早晨五点钟前后开始外出觅食,它行走的时候比较警觉,不时停下来东张西望,看看有没有可以捕食的猎物。另外一点的话,它也防止其他的猛兽捕食它。一般来说的话,猎豹每一次只捕杀一只猎物,每一天行走的距离就是大概五公里、最多走十多公里。虽然它善跑,但是它行走距离并不远。猎豹是目前世界上在陆地上奔跑得最快的动物,它的时速可以达到120。如果人类的短跑世界冠军和猎豹进行百米比赛的话,猎豹可以让这个世界冠军先跑60米,最后到达终点的是猎豹,而不是这个短跑世界冠军。它为什么跑这么快呢?与它的身体结构有关,一个是它的腿长,身体很瘦。再一个猎豹的脊椎骨十分柔软,容易弯曲,像一根大弹簧一样。就是它跑起来的时候,大家可以看,它前肢和后肢都在用力,而且身体也在奔跑中间一起一伏,所以跑得非常快。猎豹在奔跑的时候,由于追捕羚羊的需要,在急转弯时,它那条大尾巴就起了平衡的作用,不至于摔倒。

1 comment: