I don’t think I’ve seen hunting content on Lemmy before, but who knows, maybe there are people who are interested in it. I have never hunted, but I guess I technically learned something from it myself.
Generally, yes. A deer's head is much more likely to move than its torso, so its more likely you'll miss. Worse yet, you could hit the deer and miss the brain, just injuring it.
A safe shot is as depicted, hitting the heart and/or both lungs.