- 2020 in cryptozoology
- ABSM
- A Living Dinosaur?
- A Supplement to Dr Bernard Heuvelmans' Checklist of Cryptozoological Animals
- Abasambo
- Abominable Snowmen: Legend Come to Life
- Abominable swamp slob
- Abu sotan
- Abyssal rainbow gar
- Abūqarn
- Adjulé
- Adventures in Cryptozoology
- Afa
- African capybara
- African unicorn (rhinoceros)
- Agogwe
- Ah-een-meelow
- Ahool
- Ahuízotl
- Alien big cat
- Allghoi khorkhoi
- Altamaha-ha
- Alula whale
- Amarok
- Amended Cryptozoological Checklist
- American Ibex
- American elephant
- American hyena
- American sabre-toothed cat
- Ancient vampire bat
- Andean wolf
- Angel Morant Forés
- Animals & Men
- Annotated Checklist of Apparently Unknown Animals With Which Cryptozoology Is Concerned
- Antamba
- Anuntume
- Apasanca
- Aquatic genet
- Arboreal giant anteater
- Arc-la
- Arica monster
- Arkady Tishkov
- Arnošt Vašíček
- Arthur Conan Doyle
- Asipromantr
- Atmospheric beast
- Attilio Gatti
- Auli
- Austin Whittall
- Australian Big Cats
- Ayayema
- Aypa
- Bacloo
- Badigui
- Bagge's black bird
- Bahamian sierpe
- Bakanga
- Bandar-log
- Bangweulu antelope
- Baraboo Platypus
- Bat-winged monkey-bird
- Beast Hunter
- Beast of 'Busco
- Beast of Brunei
- Beast of Gévaudan
- Beast of Karoo
- Begare
- Bennu bird
- Bergman's bear
- Beringian cat
- Bernard Heuvelmans
- Beruang rambai
- Big bird
- Bigfoot
- Bigfoot in Evolutionary Perspective
- Black-and-white ape
- Black giant otter
- Black panther
- Black woolly monkey
- Blue dog
- Bodach
- Boggy Creek Casebook
- Boneless
- Booger
- Booger bear
- Brazilian bird-eating tree
- Brazilian devil tree
- British Columbia Scientific Cryptozoology Club
- Bruce A. Champagne
- Buffalo lion
- Bumé
- Bunyip
- Buru
- Bush dog
- CFZ Press
- Cabicanca
- Caddy
- Camazotz
- Canid-like predator from China
- Cannibal giant
- Capelobo
- Caquesseitão
- Carn-pnay
- Caspian tiger
- Cat of many colours
- Cats in cryptozoology
- Cats of Magic, Mythology, and Mystery
- Cave cow
- Cave lion
- Chaffee Spider
- Chakpuar
- Champagne system
- Champion of the Pines
- Charles Cordier
- Charles Pitman
- Charles William Hobley
- Charlie Jacoby
- Chipekwe
- Chirirume
- Choiropithekos
- Christian Le Noël
- Christine Janis
- Chui'erdashou
- Chupacabras
- Cigau
- Cleary's fish
- Clemente Onelli
- Coje ya menia
- Coleman-Huyghe system
- Copper State Monsters
- Corsiopsis chinensis
- Cowboys & Saurians: Ice Age
- Creationism in cryptozoology
- Crowing crested cobra
- Cryptids Which Were Kept as Pets
- Cryptids which were eaten
- Cryptobotany
- Cryptoichthyology
- Cryptozoology
- Cryptozoology (journal)
- Cryptozoology A to Z
- Cuban critter
- Cuero
- Cuvier's dictum
- Cãoera
- DSV Alvin sea serpent sighting
- Daija
- Dale Drinnon
- David C. Xu
- David Oren
- Death Worm: Metamorphosis of the Allghoi Khorkhoi
- Deep-sea spider
- Deepstar 4000 fish
- Dehominization
- Denman's bird
- Devil-pig
- Devil monkey
- Dib
- Digited creature
- Dilali
- Dimorphic beaked whale
- Dinamu
- Dingonek
- Diplocaulus
- Dobhar-chú
- Dodo
- Dodu
- Dog-fanged frog
- Domenech's pseudo-goat
- Dorsal finner
- Dracontology
- Dragons West of Loch Ness
- Drinnon system
- Drop bear
- Du
- Duah
- Dusky Sound beast
- Dwarf orange peccary
- E'chiyang
- Earth hound
- East African quagga
- Eastern Cougar
- Edward Blyth
- Edward Newman
- Eel-like sea serpent I
- Eel-like sea serpent II
- Eel-like sea serpent III
- Egyptian bear
- El Sherana bird
- Elasmotherium
- Elephant-dung bat
- Ellëngassën
- Emela-ntouka
- Emennu
- Emergent species
- Encyclopedia of Cryptozoology
- Entzaeia-yawá
- Esakar-paki
- Ethiopian deer
- Ethiopian vampire bat
- Ethnoknowledge
- Eugene Thomas
- Eurypterid photograph
- Extraordinary Animals Worldwide
- Fangalabolo
- Far-Out, Shaggy, Funky Monsters
- Father-of-all-the-turtles
- Fating'ho
- Feifei
- Feihu
- Field Guide of Whales and Dolphins
- Filipino secretarybird
- Fiordland moose
- Fisher pig
- Five-lined constellationfish
- Flannery's frog
- Florentino Ameghino
- Flying crustacean
- Forgotten Bigfoots Around the World
- Fortean Times
- Frank Searle
- Freshwater octopuses in Africa
- Freshwater octopuses in North America
- From Flying Toads To Snakes With Wings
- Gary Opit
- Gassingrâm
- Gauarge
- Gbahali
- George Eberhart
- Gerald Russell
- Giant Atlantic grenadier
- Giant Ethiopian lizard
- Giant South American lizard
- Giant beaver
- Giant caiman
- Giant cookiecutter shark
- Giant dragonfish
- Giant forest hog
- Giant goanna
- Giant hyrax
- Giant invertebrates (sea serpent type)
- Giant jellyfish
- Giant lemur
- Giant orangutan
- Giant paca
- Giant pitcher plant
- Giant potto
- Giant rabbit
- Giant ratel
- Giant shark
- Giant squirrel
- Giant vampire bat
- Giant wombat
- Gigantic octopus
- Girt dog of Ennerdale
- Glowing mudskipper
- Glyptodont
- Gobi gecko
- Gondi
- Gorp
- Gran bestia
- Graveyard Giant Cicada
- Great Brontosaurus Hoax
- Great red ape
- Great white wolf
- Greek dolphin
- Grey saki monkey
- Grootslang
- Ground shark
- Ground sloth
- Guancaishou
- Gucheche
- Guh
- Guide des Animaux Cachés
- Gulf Coelacanth
- Guoshanhuang
- Gyedarra
- Güije
- Haast's eagle
- Habéby
- Hadjel
- Hairy South American dwarf
- Hairy biped
- Hairy monitor
- Halpen
- Harry Johnston
- Hedgehog bear
- Herbert Francis Fenn
- Herman Regusters
- Heuvelmans system
- Hezhugong
- Hibagon
- Hidden Animals
- Hippoturtleox
- Historical figures who sighted cryptids
- Holadeira
- Hominology in Africa
- Homo gardarensis
- Horned cat
- Horned jackal
- Hunting Lost Beasts: Cryptid Tales
- Huáng yāo
- Iemisch
- Ikimizi
- Illigan dolphin
- In Quest of the Giant Sloth
- In Search of Prehistoric Survivors
- In the Wake of Bernard Heuvelmans
- Indian hippopotamus
- Indian monk seal
- Indian mouse-eating plant
- Indian orangutan
- Indian prairie fiends
- Indus unicorn
- Inganess Bay monster
- Ingo Krumbiegel
- International Cryptozoology Museum
- International Cryptozoology Society
- International Cryptozoology Society Journal
- International Society of Cryptozoology
- Irara-vermelho
- Irizima
- Irkuiem
- Ishtar Gate dragon
- Isiququmadevu
- Isnachi
- Itoshi
- Ivan T. Sanderson
- Iworo
- J'ba fofi
- J. Richard Greenwell
- Jacqueline Roumeguère-Eberhardt
- Jago-nini
- Jaroslav Mareš
- Jersey devil
- Jetete
- Jhoor
- Jirka Houska
- Jiukam-yawá
- Josh Gates
- Jucucu
- Jungle lion
- Jungle wildcat
- Juríjri-yawá
- Juy-juy
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