But Mad Hatter, Humans are not predators, at least not by creation. Our current state of existence copies that of the predator, but historically, we're a prey species, hunted and eaten.
So deer aren't designed to counteract our hunting methods. Wait a few millennia, and let evolution kick in for them, they'll have kevlar skin.
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Hats off to the new-age hairstyle made of bones,
Hats off to the use of hats as megaphones...
-Frosty