Given the likelihood in nature of being attacked and wounded, how come they never came to have more hardened skin to prevent being penetrated so easily?
In: 48
If we’re talking about animals in general, having a hard outer surface like a beetle, clam, or alligator seems to be more common than a soft outer surface like a jelly or hummingbird. Both strategies work once you consider other defenses like agility and toxins.
Humans use basically our entire skin to radiate heat; it gives us really good endurance (though most people don’t train for it these days), but we’re much easier to slash and stab than, say, a pig.
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