Rudolph the Red-Nosed Reindeer may be one of the most beloved Christmas stories in history. And now, a social media post about the “real” backstory of the book that inspired a song, several ...

Rudolph the Red-Nosed Reindeer may be one of the most beloved Christmas stories in history. And now, a social media post about the "real" backstory of the book that inspired a song, several movies ...

It's almost Christmas Eve, the night when Santa and Rudolph pull the king of all-nighters to deliver their gifts. But what about the rest of the year? How do real reindeer manage to get enough sleep?