Cryptozoology (kryptos - Greek for "hidden" + zoology - "the study of animals = "the study of hidden animals") is a pseudoscience which revolves around the study of and search for animals whose existence have not been verified by the scientific community.
Cryptozoological animals are referred to as cryptids, a term coined by John Wall in 1983. This includes animals which were originally considered extinct, such as non-avian dinosaurs and plesiosaurs; animals outside their natural geographical range and animals whose existence are not scientifically verified or are only based in myths, legends or reports. Famous examples of cryptids include Bigfoot, the Loch Ness monster and the Chupacabra.
↑Coleman, Loren and Clark, Jerome. Cryptozoology A to Z: The Encyclopedia of Loch Monsters, Sasquatch, Chupacabras, and Other Authentic Mysteries of Nature. New York: Fireside/Simon and Schuster, 1999