Large numbers of people believe in demonstrably false phenomena, from UFOs and ESP to Bigfoot and the Loch Ness monster. Even though these fictions have been repeatedly debunked and discredited, they persist in the human imagination and influence our beliefs and our society. Spinning tales of fantastical creatures may seem like a harmless pastime, but when pseudoscientists make "revolutionary" claims about the world and its history, evidence-based science, public policy, and human progress suffer. Daniel Loxton and Donald R. Prothero complete an entertaining, educational, and definitive text on a variety of cryptids, presenting both the arguments for and against their existence and systematically challenging the pseudoscience perpetuating their myths. After opening chapters examining the nature and practitioners of pseudoscientific thought and marking its divergence from proper science, Loxton and Prothero take on Bigfoot; the Yeti, or the Abominable Snowman, and its cross-cultural incarnations; the Loch Ness monster and its many, highly publicized sightings; Champ, Ogopogo, and other lake monsters; the legend of the Sea Serpent; Mokele Mbembe, or the Congo dinosaur; and the Goat Sucker, otherwise know as the Chupucabra. They conclude with an analysis of the psychology behind persistent paranormal and extraordinary belief, identifying cryptozoology's major players, the character of its subculture, and its pernicious perversion of critical thinking in our society.