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Since humans are slower and weaker than some predators, why has no animal evolved to prey on humans? Adriana Heguy只有一种动物曾经专门猎杀人类：智人。 我们是食物链顶端的捕食者，顶端的捕食者极少作为食物被其他动物猎杀。狮子不是其他任何食肉动物的猎物，除了偶尔被土狼猎食的狮子幼崽。狮子的生存危机并不来自于其他捕食者，而是稀缺的猎物资源。 人类可能战斗力和运动速度都远远不及其他捕食者，但是我们在漫长的进化史中成为了依靠社会群体或部落的保护而生存的群居动物。其次，我们的祖先进化出一种独特的思维意识，使人类可以依靠智慧，利用武器或以其他方式驱赶捕食者。 当然有时候，一头无意识捕获了远离群体的人类的猛兽也会宰杀并吃掉他，就如同猎杀任何其他猎物。印度和孟加拉国的老虎就可能会这么做，美洲狮和美洲虎偶尔也会捕食人类。如果幼童们处于无人照看的状态，野生动物比如熊可能会叼走然后吃掉它们（不幸的是，类似的事情曾经发生过）。 但是从来没有任何捕食者以人类群体作为捕食目标，没有武器的少数几个人单独在外就不好说了。
Adriana Heguy An animal in fact evolved who specializes in killing humans: Homo sapiens. We are a top predator. Top predators rarely have predators that specialize in killing them for the purpose of eating them. Lions are not prey items for other carnivores, unless we are talking about the occasional cub killed by a hyena. The threat for lions is not other predators, but rather, the scarcity of prey. We may be weak and slow, but we evolved as social animals with the protection that the social group or tribe affords. Also, our ancestors developed a complex form of intelligence that allowed them to find ways to fend off predators using weapons, for example. Of course, a predator that catches a human unaware and far from the group will kill and eat the human as it would any other prey. Tigers for example do this in India and Bangladesh. Pumas and jaguars occasionally kill and eat humans. If babies are left unattended, a wild animal such as a bear can carry the baby away and eat him (unfortunately, this has happened). But there are no predators who would target a human group as prey, unless we are talking about a very small group of humans with no weapons. |
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