This is The Predator Holiday Special, a surprisingly gory stop motion short released by 20th Century Fox that pits the Predator against Santa and his reindeer and elves. Who wins? SPOILER SPOILER SPOILER: my mom wouldn't let me watch it.
Keep going for the video so you can describe it to me in detail and tell me who wins. Also, you should definitely make your kids watch this before the stop motion Rudolph the Red-Nosed Reindeer. Tell them it's a trailer.
Thanks to K Diddie, who was really hoping for an Alien twist ending.