他们研究动物如何保护自己免受捕食者的伤害，以及哪些动物会捕食其他动物。
They study how animals protect themselves from their predators, and which animals kill other animals for food.
这种防御机制已经为人所熟识了，而且在其他一些无脊椎动物中也有发现。但是目前还没有报道说明是什么使得它们形成这样的机制，也不知道这是否可以有效地反抗捕食者。
This is a recognised defence mechanism and has been mentioned in other invertebrates, but no one had published on what exactly makes them do it or whether it actually is effective against predators.
当这些三叠记时期的小鲨鱼们成型之后，它们就能捕食植物周围的小型无脊椎动物，茂密生长的植被还能保护它们免受其他狩猎者的袭击。
Once born the Triassic-era babies would've had their pick from a rich food supply of tiny invertebrates while dense vegetation offered protection from predators.
大多数动物都和其他种群很少接触，除非要么是捕食者，要么是食物。
Most animals have little connection with animals of a different kind unless they kill them for food .
其他动物也会交流——土拨鼠警觉的叫声是在警告其他伙伴周围有捕食者；饥饿的猫喵喵地叫是告诉它的主人赶紧把食物放下来给它吃。
Other animals can communicate—the alarm calls of prairie dogs to warn of a nearby predator, say, or the meowing of a hungry cat to tell its owner to put food down.
其他动物也会交流——土拨鼠警觉的叫声是在警告其他伙伴周围有捕食者；饥饿的猫喵喵地叫是告诉它的主人赶紧把食物放下来给它吃。
Other animals can communicate—the alarm calls of prairie dogs to warn of a nearby predator, say, or the meowing of a hungry cat to tell its owner to put food down.
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