Yeah, I don't like this and I'll even go so far as to say I think it's a little sick.
I know that hunting is in their nature, but I also feel that's the difference between a wild animal and a pet.
Our dog has a strong prey instinct but we would NEVER encourage him to kill another animal.
Even hunting breeds are trained to stop at a certain point. Their job is to flush out prey or to locate it, not to make the kill.

