Coonhound keeps eating dead animals he finds in the woods.

This is the third time I've taken Rufus for a walk in the woods and he has found a small animal skeliton and wouldn't drop it. If I try to take it out of his mouth he becomes agreasive. He is 110lbs, so I am reluctant to try to force it out of his mouth. The last time it was a showdown', he clearly knew I was mad at him, but there was no way he was going ro let it out of his mouth. Then he brought the stinky skeleton into my car and proceeded to eat it. Does anyone have any suggestions on how I can get him to drop the roadkill and stop being so damn stubborn? He is a wonderful dog most of the time, but the most stubborn dog I've ever had.