Unlike many other extraterrestrial races in film and television science fiction (such as the Daleks and Cybermen in Doctor Who, or the Klingons and Borg in Star Trek), the xenomorphs are not sapient toolmakers — they lack a technological civilization of any kind, and are instead primal, predatory creatures with no higher goal than the preservation and propagation of their own species by any means necessary, up to and including the elimination of other lifeforms that may pose a threat to their existence.