Another way, my dad used on his hounds when he had a litter on the ground was to build a pen of some size but not overly large, then throw in a wild rabbit and let the pups play/chase/smell it. Since the dogs where pups they didn't know how to kill it but it brought out the instinct. Be carefull that the pup is not too young/small for this, if rabbit fights back it might put the pup off . Oh, almost forgot, about the only command you should try to teach it is "come".