The strangest thing of all time is that certain snails may sleep for up to three years! This is because they require wet circumstances to exist, and if the weather does not provide adequate moisture, they will hibernate. Honeybees, which can flap their wings 230 times per second, are also fascinating creatures. And did you know that baby pandas are born smaller than mice? They're only four ounces! Finally, horses and cows can sleep standing up but only dream while lying down.