The common answers include things like seeking safety in numbers or hunting in packs or gathering to mate or breed, and all of these explanations, while often true, make a huge assumption about animal behavior, that the animals are in control of their own actions, that they are in charge of their bodies.
通常的说法包括 获得安全，或者方便捕猎 或者聚集交配繁殖， 这些所有解释 虽然通常正确 但对动物行为做出了一个重要假设， 那就是动物掌控它们的行为， 并掌控它们的身体。