Did you know?
Reindeer grow beards in the winter. The extra facial hair covers their mouths, protecting their muzzles from frostbite when they’re grazing on frozen lichen
The click-click noise reindeer make when they walk is created by the tendons in their knees; it’s thought it helps them locate each other in blizzards
Uniquely among deer, both male and female reindeer have antlers. They grow new ones every year