translation.en: Unless you're stuck in a laboratory cage -- and you know, if you spend your entire life in a little box, you're not going to be as picky about who you have sex with -- but I've looked in a hundred species, and everywhere in the wild, animals have favorites.
translation.zh: 除非你把它们关在实验室的笼子里—— 当然，如果你在笼子里度过一生， 也不会那么挑食了。 在调查了一百个物种后， 我发现野外的每一个角落，每一只动物都有各自的心之归属。