My pointer was happily running round with a dead squirrel in his mouth the other day- no way was he coming back to me as I would spoil his fun. Only way to get him to drop it was to get the springer on the case who made him drop it by bullying him and then I was able to get him to leave it and he actually listens to a command- always happens when you are running late too!
Not quite as bad as the time he was running round with a deers leg in his mouth pre- springer and it took me 40 minutes to get it off him!!!