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19. The Xenomorph â€” Alien
These little critters chew their way out of people's chest cavities just to be born, so you can probably guess that they aren't the most delicate eaters. They have prehensile tongues complete with another set of jaws and prefer not to chew anything much smaller than a human head. As a result their meal times tend to be messy and to involve a lot of screaming.