nature movies

is there a site pertaining the making of the nature movies that use to be so popular but then were publicized as Fake, Staged, Injuring the animals…?

You know the ones where the Tiger happens upon a Lion and they have a fight. (how they got in the same jungle is beyond me). They were big in the 60s about Africa and this great white hunter. then died out.
Then they made a comeback in the late 70s until the scandals.