This has to do with the re-introduction of the wolves to Yellowstone Park, but you have to watch it to see why it's so cool.
Cool's probably not the right word.
Basically, it's why we shouldn't fuck with the ecosystem.
When I was teaching in Idaho, almost all my students were against the reintroduction of wolves into the park. Because wolves would eat cattle, basically. No arguments about cattle being on government land, and environmental protection cut any ice with them.
Did you see that the GOP is voting to repeal the Clean Water Act, by the way? This sort of thing makes me want to take to the streets with pitchforks and tumbrils.