I have a snake. Normally she eats frozen thawed(and a tegu or monitor lizard does NOT need to eat live!! They are piggy little scavengers! This vid was *just* for views(I didn't watch it)), but every now and again we give her a live chick. This is always and only done with chicks who are done for. Our snake finishes it quickly so they don't suffer. I will do it if she wont take the prey, but I am more of a coward than our snake and I prefer not to kill baby chicks, even if they are suffering.
Hypatia is our angel of death. She constricts quickly and ends their pain fast, and then respects their sacrifice by eating them, making their lives not be for nothing.