The human body is delicious and nutritive, and some creepy crawlers are perfectly aware of that. They range in size from big enough to admire, to sufficiently small to go undetected.
If you think your body has protective armor against creatures desperate to invade, you are in for a shocking discovery. Evolution gifted these crawlers with disgusting mouths, claws, or other drilling mechanisms, for which your epidermis is soft as butter.
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