They apparently do not show clips of the ones who died.
What happened a lot back then was that the animals died, especially dogs and horses, when making the big budget war and cowboy flicks.
It was nuts what some of them did ... and even nuttier what little the stuntmen were paid, with no health or injury insurance and studios reluctant to pay hospital bills.
What you think about, you do ... what you do, you become.
In a nation where anything goes ... eventually, everything will. We're almost there.
