One true reindeer fact everyone should know is that they don’t fly. If you didn’t know that, and I just crushed your childhood dreams, then I’m sorry. As much as we might wish they flew, they don’t. It’s the sad reality gravity and physics deals to us land-dwellers. But, fear not, there’s plenty to learn about reindeer, nevertheless. These noble creatures of the north have been on the Earth for a long time, surviving many dangers, like the Ice Age freezing them to death and homo sapiens hunting them for food. They migrate great distances and can run almost as fast as your car. Despite these great feats and their ability to survive extinction, thanks to climate change, they aren’t doing so hot. So, pour one out to Rudolph and lets learn a few things about these majestic creatures. Here are 25 True Reindeer Facts You Probably Didn’t Know.
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They survived the last Ice Age and much of their DNA today is informed by it.
Source: http://sciencenordic.com/reindeer-genes-show-clear-influence-last-ice-age Reindeer live all across the Northern Hemisphere, from Canada to Nordic Countries to Russia.
Source: http://sciencenordic.com/reindeer-genes-show-clear-influence-last-ice-age In North America, reindeer are also called caribou.
Source: https://blog.nwf.org/2010/12/reindeer-twelve-fascinating-facts-about-these-amazing-creatures/ Caribou is a French word which means, "snow shoveler."
Source: http://mentalfloss.com/article/29470/11-things-you-might-not-know-about-reindeer North American caribou sometimes migrate up to 3,000 miles (4828.032 km) a year.
Source: https://blog.nwf.org/2010/12/reindeer-twelve-fascinating-facts-about-these-amazing-creatures/ 
