I can definitely see where you're coming from, but then again, I work my dog in Schutzhund, so I actually try to build this kind of drive. I know so many people who would never think of their dog as being a prey-driven animal, but that's what they are at heart. Some obviously are more so than others, but I think every dog has some prey drive. I love it when people I know see their dogs swinging the toys around and pouncing on them, etc., and they think its so cute, but then are horrified when the dog goes after a cat or some other small animal. I guess I've always looked at dogs and seen them as a predator, but I know so many people who really don't see them like this at all. Don't let it get you down, and don't let it make you start thinking of your dog as a cold-hearted killing machine. He's just doing what's in his genes to do.