According to the Alaska Department of Fish and Game, while both male
and female reindeer grow their annual antlers in the summer, 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.