Animals
Articles about animal species, behavior and classification.
Crane (bird)
Crane (bird): overview, biology, distribution, and conservation
Crane fly
Crane fly (Tipulidae): appearance, life cycle and ecological role
Craniata
Crappie
Craugastoridae
Craugastoridae: Neotropical direct-developing frogs
Crayfish
Crayfish: freshwater crustaceans, biology, diversity, and human uses
Creodont
Crepidophryne
Crepidophryne — highland toads of Costa Rica and Panama
Crest (feathers)
Crested penguin
Crested penguin (genus Eudyptes)
Crested quetzal
Cricket (insect)
Crinkle-collared manucode
Crinoidea
Cristatusaurus
Cristatusaurus — an Early Cretaceous spinosaurid from West Africa
Crocodile
Crocodile: biology, behavior, evolution and human interactions
Crocodilia
Crocodilia: biology, evolution, and ecological role
A comprehensive overview of crocodilians (order Crocodilia): their classification, anatomy, fossil origins, behaviour, ecological importance, and conservation challenges.
Crocodylomorph
Cross River gorilla
Crossbill
Crossbill (genus Loxia): the cone‑feeding finches with crossed bills
Crotalinae
Crotalus
Crotalus — genus of rattlesnakes
Crotalus enyo
Crotalus ruber
Crotalus ruber (Red Diamond Rattlesnake)
Crow
Crow (Genus Corvus): Description, behavior, distribution and cultural role
Crown-of-thorns starfish
Crustacean
Cryolophosaurus
Cryolophosaurus — Early Jurassic theropod from Antarctica
Cryptobranchoidea
Cryptoclidus
Cryptoclidus — a medium-sized plesiosaur of the Middle Jurassic
Cub
Cuban solenodon
Cuckoo
Cuckoo bee
Cucujiformia
Cucujiformia: infraorder of plant-associated beetles
Culex
Curl-crested manucode
Curl‑crested manucode (Manucodia comrii)
Currawong
Currawong (Strepera): an overview of the Australasian passerine
Cuscus
Cuscus: an overview of the arboreal marsupial
Cuttlefish
Cuvier's beaked whale
Cuvier's beaked whale (Ziphius cavirostris)
Cuvier's dwarf caiman
Cuvier's dwarf caiman (Paleosuchus palpebrosus)
Cycloramphinae
Cycloramphinae: a subfamily of Neotropical frogs
Cymbospondylus
Cymothoa exigua
Cymothoa exigua — the tongue‑eating louse
Cynodont
Cynognathus
Cynognathus — a wolf-sized cynodont of the Triassic
Cyprinidae
Cyprinidae: the carp and minnow family