Before two years ago, I would be with ya on this one. But personally witnessed a person shooting a deer, and finding one lung, totally gone from a shoulder shot. It was pretty gross, and had alot of puss in his body. But we know for sure, his father shot it 2 months before. He patterned the deer pretty good, and caught it on camera a few times before and after the hit. I just can't believe it lived for a long time after that.