And what it does is--one way to reproduce is to occupy other animals and manipulate their bodies so as to expel it.

它繁衍的方式是,占据其他动物并操纵他们的身体,以驱逐他们。

耶鲁公开课 - 心理学导论课程节选

And so, that simple fact is why we would expect animals to care for their children, because children are the means through which genes replicate.

所以，简单的事实是,我们为什么期待动物关心后代，因为后代是基因繁衍的方式。

耶鲁公开课 - 心理学导论课程节选