But in recent years people have set their sights on the more distant past, when Europe's forests were filled with elephants, rhinoceroses and big cats.

但近年来，人们把目光投向了更遥远的过去，那时候欧洲森林里到处都是大象、犀牛以及大型猫科动物。

Particularly when they are big cats.

尤其它们为大型猫科动物。

Baby cats, big cats, skinny cats, sick cats.

猫宝宝、大个猫、瘦猫、病猫。

Lions and leopards are some of the big cats.

狮子和豹子是猫科动物。

But many people are working to save the big cats.

不过很多人都在尽力挽救这些大型猫科动物。