Summary:
- Reindeer antlers are shed and regrown annually, with the largest antlers belonging to male reindeer.
- Rudolph's red nose is likely caused by a condition called "rhinophyma," which can cause the nose to appear red and bulbous.
- Santa's sleigh is likely powered by a combination of reindeer and magic, as reindeer alone would not be able to pull a sleigh full of presents around the world in one night.