Now if you are a bird and there is a predator around.
假设你是一只鸟，且现在周围有捕食者。
A predator is an animal that hunts and eats other animals.
捕食性动物是一种猎食其他动物的动物。
It serves to distract a predator while the octopus makes its escape.
它的作用是在章鱼逃跑时分散捕食者的注意力。
What would he have done if attacked by a predator or an invading Klingon?
如果被捕食者或者入侵的克林贡人攻击，他会怎么做？
For example, our prairie dog spots a predator, a big coyote approaching rapidly.
比如说，我们的草原犬鼠发现了一个捕食者，一只大土狼正在迅速靠近。
The crown of thorns starfish is a coral reef predator that preys on coral polyps.
刺冠海星是一种以珊瑚虫为食的珊瑚礁捕食者。
Because if the predator doesn't know you are there, it is not going to try to eat you.
因为如果捕食者不知道你在那里，它就不会试图吃掉你。
When a predator approaches, they do their best to attract the attention of that predator.
当某个捕食者靠近时，它们会尽力吸引这个捕食者的注意。
When a predator always eats huge numbers of a single prey, the two species are strongly linked.
一种掠食动物经常大量捕食单单一种猎物时，这两个物种是紧密联系的。
Its skin resembles that of another impressive predator and acts as camouflage on rocky seafloors.
它的皮肤与另一种令人印象深刻的捕食者相似，在多岩石的海底充当伪装。
They do that to draw the predator away from their nest, away from their eggs or their young birds.
它们通过这样做来把捕食者引离它们的巢，离开它们的鸟蛋或幼鸟。
In this situation, the predator and prey population may continue in this cyclical pattern for some time.
在这种情况下，捕食者和被捕食者可能会在一段时间内继续这种循环模式。
For today, let's look at a reptile, a predator that hasn't evolved much in the last seventy million years.
今天，让我们来看看一种爬行动物，一种在过去七千万年里没有进化很多的食肉动物。
In this study, the researchers looked at the high-pitched barks a prairie dog makes when it spots predator.
在这项研究中，研究人员观察了土拨鼠发现捕食者时发出的高音吠叫声。
Therefore, from the stand point of diversity, it is usually a mistake to eliminate a major predator from a community.
因此，从多样性的角度来看，将一种主要捕食者从一个群落中彻底消灭通常是一个错误。
Low prey population levels then provide inadequate food for the predators, causing the predator population to decrease.
较少的猎物数量为捕食者提供了不足的食物，导致捕食者数量减少。
The elements of intelligence and consciousness come together marvelously to produce different styles in predator and prey.
智慧和意识的元素奇妙地结合在一起，在捕食者和猎物身上产生了不同的风格。
This unexpected display of color startles or confuses the predator and provides the would-be prey with an opportunity to escape.
这种意想不到的颜色表现会吓到捕食者或使其迷惑，并为潜在的猎物提供逃跑的机会。
As predicted, the birds incubated in the light looked for food mainly with their right eye, while using the other to check out the predator.
正如预测的那样，在光线下孵化的小鸟主要用右眼寻找食物，而用另一只眼睛观察是否有捕食者。
Now let's focus on a specific example of a natural predator that can cause a lot of damage to coral reefs—the Crown of Thorns, or CoT starfish.
现在，让我们来看一个自然捕食者的具体例子，它会对珊瑚礁造成很大的伤害——那就是刺冠海星。
At night, the pit organs allow snakes to "see" an image of their predator or prey-- as an infrared camera does-- giving them a unique extra sense.
在夜晚，窝器能让蛇类“看到”捕食者或者猎物的图像——正如红外摄影机一样——赋予他们一个独特的额外感官。
These unassignable animals include a large swimming predator called Anomalocaris and a soft-bodied animal called Wiwaxia, which ate detritus or algae.
这些无法归类的动物包括被称为奇虾的会游泳的大型食肉动物，以及叫做威瓦亚虫的软体动物，它们以岩屑和藻类为食。
The seal's longer excursions underwater, during which it appears to be either exploring distant routes or evading a predator, do evoke the diving response seen in the laboratory.
海豹在水下更长时间地遨游，在这段时间里，它似乎是在探索遥远的路线，或是在躲避捕食者，这确实能唤起我们在实验室里看到的潜水反应。
When experimental populations are set up under simple laboratory conditions, the predator often exterminates its prey and then becomes extinct itself, having nothing left to eat.
当实验种群在简单的实验室条件下建立起来时，捕食者往往会消灭它的猎物，然后自己也走向灭绝，因为没有东西可以吃。
Something dramatic happened to Australia's dominant land creatures—somewhere around 46,000 years ago, strikingly soon after the invasion of a tool-wielding, highly intelligent predator.
大约4万6千年前，在一种使用工具、高度智能的捕食者入侵后不久，澳大利亚主要的陆地生物发生了一些巨大的变化。
Prey species, like young deer or goats, for example, typically play by performing sudden flight movements and turns, whereas predator species, such as cats, practice stalking, pouncing, and biting.
比如说，像小鹿或者山羊这种被捕食的种群，它们的代表动作就是突然快速逃跑的动作和突然转弯；相反的，猫科动物之类的捕食种群会练习潜行追踪、猛扑和撕咬等动作。
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