A Fawn was once walking in the forest with its parents. After wandering for some time, the deer came upon a cave. "Can we look inside?" the Fawn asked.
The Fawn's parents declined, but when questioned further by the Fawn, explained: "We know this cave. We have never been inside, but we have seen other creatures go in. We have seen mice and dogs, even bears and lions. None of them ever come back out. The only creatures that ever emerge from the cave are bats."
As if to confirm their words, a bat came flying out of the cave. They turned, ushering the Fawn away from the cave. "Leave the shadows to the bats."