1. Reindeer and Caribou are the same thing.
2. Donner and Blitzen mean thunder and lightening in German.
3. Both male and female reindeer have antlers.
4. Rudolph was first introduced in the poem "The Night Before Christmas" in 1823 by Clement Moore.
3. Fact - Male reindeer shed their antlers in winter and female reindeer she their antlers in the spring.
4. Fake - It wasn't until 1939 and the song "Rudolph the Red Nosed Reindeer" that popularized Rudolph!!