Cryptozoology (from Greek, kryptos, “hidden” + zoology; literally, “study of hidden animals”) refers to the search for animals whose existence has not been proven. This includes looking for living examples of animals that are considered extinct, such as dinosaurs; animals whose existence lacks physical evidence but which appear in myths, legends, or are reported.
The animals cryptozoologists study are often referred to as cryptids, a term coined by John Wall in 1983. Well known creatures include Bigfoot, the Loch Ness Monster, Chupacabra; and wild animals dramatically outside their normal geographic ranges, such as phantom cats or “ABCs” (an abbreviation used by cryptozoologists that stands for Alien Big Cats).
Cryptozoology is not a recognized branch of zoology or a discipline of science. It is an example of pseudoscience because it relies heavily upon anecdotal evidence, stories and alleged sightings.