As someone who has personally slaughtered and processed rabbits on a small family farm it's certainly a shock when you first hear that scream. Ideally you never

As someone who has personally slaughtered and processed rabbits on a small family farm it's certainly a shock when you first hear that scream. Ideally you never do though since a "clean" butcher has the animal largely unaware due to a sudden violent blow to the skull resulting in immediate death (or as close as possible).