I have a three-going-on-four year old GSP who has no trouble returning a downed bird to hand but will not touch a shot rabbit. She will track them, point them, and I certainly don't mind shooting them but after the shot she just walks over to it and sniffs it. If i put it in her mouth she will hold it and walk a bit with it but spits it out as soon as I glance away. It's not that big of a deal but I would like her to to be well rounded and well disciplined and retrieve everything I shoot without being picky. Does anyone have any suggestions for getting her to retrieve furred game?