Congrats on a nice deer and way to go with the donation as well. The deer may not have bled because its heart stop on impact with the shot, he was just running on borrowed time. With no heart to pump the blood, it probably just filled like a bathtub in the chest cavity. When you generally track a lung/heart shot deer that has a heart still beating, you can see the gushes on blood when you trail a deer, I attribute this to the beating of the heart pumping out blood in spurts. Anyways, again congrats on a nice buck!