He said, "crack it over the head, but not enough to kill it. Just stun it long enough so that it lays there still. Once he gets the idea that his prey will lay still, he will eventually get the idea"
Geeze, crack it over the head? I would just as soon feed it alive so that it can be humanely killed and eaten for heavens sake!

 
I had to do that to the rats that my son fed his boa constrictor; the pet shop where my son bought Sparky recommended that so the rats wouldn't bite her. My son was too squeamish (like I wasn't?) [:'(] She had a great personality though; very easy going.