Don't forget, it's better to have your arrow completely pass through the animal rather than stay in it especially with the broadhead out of the body cavity. The arrow could stop/clog the blood flow from the hole not to mention it's best to recover the arrow as some clue as to the hit.

A found arrow also could indicate a miss if clean of hair/blood etc...if you can't find your arrow, your missing a piece of the puzzle when necessary.