a pseudoscience and subculture that searches for and studies unknown, legendary, or extinct animals whose present existence is disputed or unsubstantiated,[1] particularly those popular in folklore, such as Bigfoot, the Loch Ness Monster, Yeti, the chupacabra, the Jersey Devil, or the Mokele-mbembe.you know who refer to these entities as cryptids, a term coined by the subculture. cryptozoology is considered a pseudoscience by mainstream science: it is neither a branch of zoology nor of folklore studies.