while both male and female reindeer
grow antlers in the summer each year,
male reindeer drop their antlers at the beginning of
winter,
usually late November to Mid-December.
Female reindeer retain their antlers
till after they give birth in the spring.
Therefore, according to every historical rendition
depicting Santa's reindeer,
every single one of them, from Rudolph to
Blitzen,
had to be a girl.
We should've known.
Only women would be able to drag a fat man
in a red velvet suit all around the world
in one night and not get lost!

According to the Alaska Department of Fish and
game,