Just googled to see if anyone thinks this is an ethical problem and I found the shocking case of a 1958 oscar winning nature documentary where they actually threw lemmings off a cliff and pretended that they were jumping.
"The 1958 Oscar winner "White Wilderness" tugged at heartstrings, with a now-famous scene of suicide by lemmings. It was outed as a fake several years ago. Those lemmings didn't jump to their watery death. They were hurled off those cliffs by the filmmakers. Lemming suicide is a myth."
www.abovetopsecret.com/forum/thread768829/pg1
It is about ethical film making
"Disney, however, is in the entertainment business. When wildlife documentaries announce themselves as real, they should be real, and if the producers staged sequences, rented animals, or used M&M’s, they have an ethical obligation to tell the audience. This goes for sounds as well. After all, there are people who think big snakes make the roaring sound the CGI villain makes in “Anaconda”; the fake sounds in nature films mislead many more. Real life footage is supposed to teach us something, not stuff our heads full of more misinformation."
ethicsalarms.com/2010/09/27/wildlife-documentary-deception/
It also makes you wonder whether there is a similar blurring of fact and fiction in other areas of reporting such as possibly ice caps melting etc. and the whole area of 'climate catstrophe'.