So Now You Know

According to the Alaska Department of Fish and Game, while both male and female reindeer grow antlers in the summer each year (the only members of the deer family to have females that do so), male reindeer typically 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. Thus, it is likely that Santa's reindeer are female.