Five ways reindeer are perfectly evolved for pulling Santa's sleigh

We all know that Father Christmas would struggle to deliver presents to everyone around the world without the help of his magical reindeer. But why were they chosen to pull the sleigh rather than any other animal?

It turns out that the biology of reindeer makes them ideal for the job. Here are five reasons why.

Warmth

Reindeer live in the Arctic, where temperatures on long winter nights often plummet below -30°C. Unlike most mammals, which only have one layer of fur, reindeer have two: a dense underfur beneath a blanket of hollow guard hairs. Reindeer can have up…

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