There are two rather interesting things about Rudolph the Red-Nosed Reindeer. The first is the red nose. The second is that he, along with all of Santa's reindeer, is a girl. Only Female reindeer keep their antlers through winter. If you don't like this possibility, then maybe Santa took a page from the Sami's care of reindeer and all of his reindeer are eunuchs. Rudolph?