Hmm, no, actually I didn’t know that the first reference to Santa’s reindeer can be found in Old Santeclaus with Much Delight, an illustrated poem published in 1821. That’s a fun fact for sure.
Because of that, they are more tame and can be used for pulling sleds. Some reindeer are even trained to race! Both caribou and reindeer have the same scientific name, Rangifer tarandus ...