cats

Explanation: In the Greek mythic figure Hercules' battle against the Nemean Lion, the lion was invulnerable to weapons. So Hercules killed it with his bare hands. Some depictions may look familiar to those who have had to give their cats medication.

Afterwards, Hercules wore the lion's pelt on his head as a form of armor. Since it was, well, invulnerable to weapons.

I have to give my 14yo cat pills now and if that second shot of the cat with a pill in its mouth isn’t photoshopped, I’m seriously impressed by the photographer.