3. Flying Foxes, the world's largest bats, can have 6-foot wingspans.
And you thought that vampire bats were scary! The Australian Flying Foxes (aka Grey-headed Flying Foxes) have an average of 3.3-ft wingspans! Don't worry, these guys munch on fruit, pollen, and nectar, but then again, they are the size of a toddler.
© W. Perry Conway/CORBIS