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。
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。
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。
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。
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 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。
And if a predator can move on to another species that is easier to find when a prey species becomes rare, the switch allows the original prey to recover.
当一种猎物变得稀有时，如果捕猎者能够转向其他更容易找到的物种，这种转变可以让原来的猎物数量得到恢复。
He found that strongty-lateralised individuals were able to feed twice as fast as wealdy-lateralised ones when there was a threat of a predator looming above them.
他发现，当掠食者的威胁逼近时，强侧化个体的进食速度是弱侧化个体的两倍。
When caught by a predator, A. wyvillei lights up in a process called bioluminescence.
当被捕食者抓住时，这种水母会发光，这一过程被称为生物体发光。
Faced with a precipice or a predator, the brain is biased to make certain decisions.
面对悬崖或掠夺者，大脑做出的决定会有一定的不同。
"For a predator, even if it can see in the UV, the patterns will be a blur," Cuthill says.
对于捕食者来讲，即使它们能够看到紫外图像，那也只能发现一个模糊地影像。“Cuthill说。”
Another way is to pay them some form of compensation when a predator kills their animals.
再有就是一旦他们的家畜遭到捕食，均以某种方式为他们提供补偿。
They can't run fast or scare an enemy off with a loud roar or spray a predator with a noxious scent.
它们跑不快，没有大声的咆哮可以吓走敌人，也不能散发出讨厌的气味熏走敌人。
They reduced the odds that a predator would take us by surprise or that we'd overlook a nearby source of food.
这样一来，我们被对手突袭的机会减小了，也不会错过触手可及的食物。
It turns out that males get the attention of potential mates by making their move after a predator announces its presence.
最近的研究表明，这种鸟类的雄鸟在捕食者发出警告声音后，发起行动以引起获取雌鸟的关注。
News that a predator is approaching spreads quickly through a school because fish sense from their neighbors that something's going on.
有新闻讲道一条掠食鱼通常会快速将一个鱼群弄散，是因为鱼能从邻伴那里得知将要发生的事情。
One day, however, she suddenly disappeared, and Dorothy does not know if she left the capuchin group voluntarily or was killed by a predator.
然而有一天，幸运儿却突然失踪了，就连桃乐丝也不知道，它究竟是主动离开了，还是被肉食动物给吃了。
Pit a human being against a predator whose jaws, claws and brute strength can kill in an instant, and the outcome is going to be bad for the human.
一个人面对猛兽的血盆大口、尖牙利爪和可以瞬间致死的兽性力量，对人来说结果是糟糕的。
Even if the prey had a good sensory system to notice a predator closing in, the success rate of a nocturnal attack may be higher than a diurnal attack.
即使猎物拥有很好的感知系统，注意到了食肉动物正在靠近，夜间攻击的成功率也可能比白天攻击的成功率高。
One of the strongest arguments for T. rex being a predator is that its fangs are sharp and pointed, rather like the teeth found in many predators today.
霸王龙是肉食动物的最强的论据之一是它的尖牙尖锐而锋利，跟今天的肉食动物极其相似。
It waddled towards the pool, looking less like a predator than like an elderly sumo wrestler tottering uncertainly towards a bout with a reigning champion.
它摇摇摆摆地走向水池，看起来不像是一个食肉动物，而更像是一个年老的相扑选手蹒跚地走向和卫冕冠军的一场较量。
In a natural habitat they likewise would become particularly anxious in the presence of a predator in bright light where they would be more easily detected.
在自然界的领地，老鼠会表现特别焦虑，因为捕食者在亮光的环境下出现，此时它们更易被发现。
The first kind of behavior is a reaction to a potential threat, in which a predator isn't visible but there is good reason to worry that it might be nearby.
第一种是针对潜在威胁的行为：虽然未曾出现在视野中，但有充分的理由相信猫就在近处。
Many birds have an instinct to protect their young when approached by a predator, but they will eventually give up if the predator is too strong or dangerous to deter.
大多数鸟类都有保护他们幼仔接近食肉动物的天性，但是他们最终会因为来袭者的强大或者危险去阻止而放弃。
"It's much harder for a predator to avoid being spotted by a thousand fish than it is to avoid being spotted by one," says Daniel grunbaum, a biologist at the University of Washington.
“对掠食鱼来说，避免被一条鱼发现轻而易举，可要避免被一千条鱼发现就难上加难了”，华盛顿大学的生物学家丹尼尔•格朗鲍姆(Danielgrunbaum)讲道。
"It's much harder for a predator to avoid being spotted by a thousand fish than it is to avoid being spotted by one," says Daniel grunbaum, a biologist at the University of Washington.
“对掠食鱼来说，避免被一条鱼发现轻而易举，可要避免被一千条鱼发现就难上加难了”，华盛顿大学的生物学家丹尼尔•格朗鲍姆(Danielgrunbaum)讲道。
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