Are Santa's Reindeer Male or Female?
Male reindeer generally shed their antlers long before December 25, whereas the females retain theirs until at least January. The reindeer pulling Santa's sleigh are always shown as having antlers, so Santa's reindeer must all be females.
A hard look at the evidence suggests that at least some of Santa's reindeer were females (the ones giving the directions, no doubt), some may have been young bulls, and some may have been neutered males.
Santa also has special bulls (males) which are used for breeding purposes. These reindeer are not used for flying the sleigh, only for breeding.
What Makes Santa's Reindeer Fly?
Long ago, Santa Claus and the elves discovered the special formula of Magical Reindeer Dust which make them fly. This dust is sprinkled on each of the reindeer shortly before they leave on Christmas eve. It gives them enough magic to fly right around the world. They can fly very fast: at about the speed of a Christmas
light.
The Reindeer driven by Santa Claus are the only known flying Reindeer in existence. Besides the Magic Dust, Santa's reindeer are fed a "special" diet throughout the year which helps give them the power of flight.