Archaeotherium is a prehistoric mammal species that belonged to the extinct family of entelodonts, commonly known as "hell pigs." The name archaeotherium comes from Greek, which means "ancient beast" or "primitive beast." However, there are several other terms that refer to this species, such as "the terror pig," "the pig from hell," "the giant pig," and "the swamp pig." These synonyms denote the massive size, aggressive behavior, and fearsome reputation of archaeotherium, which roamed the earth approximately 30 million years ago. Despite the ferocity associated with these animals, their fossils today serve as valuable specimens for scientific analysis and paleontological research.