Reindeer, or caribou, can outperform all other land animals in their energy efficiency - so are a fitting choice as the legendary Christmas sleigh-pullers! They're more usually seen on their mammoth annual migration to the Arctic during which the North American herds might travel for more than 5,000km - an extraordinary feat that takes them further than any other land mammal.
The reindeer, also known as caribou in North America, is a species of deer of the tundra and subarctic regions of Eurasia and North America. From tales of glowing red noses to debates about the physics behind their annual circumnavigation around the world, talk of reindeer is at an all-time-high this time of year. But there’s a lot more to this charismatic winter mammal than their sleigh-pulling abilities.