Animals
Articles about animal species, behavior and classification.
Dicynodont
Didelphis
Didelphis — genus of large American opossums
Didynamipus
Didynamipus — the four‑digit toad, a monotypic genus of Bufonidae
Digenea
Dik-dik
Dik-dik: small African antelopes of the genus Madoqua
Dilong paradoxus
Dilong paradoxus — small feathered tyrannosauroid from Early Cretaceous China
Dilophosaurus
Dimetrodon
Dimetrodon — sail-backed Permian synapsid
Dimorphodon
Dimorphodon — Early Jurassic pterosaur notable for two tooth types
Dingo
Dingo: wild canid of Australia and Southeast Asia
Dinornis
Dinornis — the giant moa of New Zealand
Dinosaur
Dinosaurs: biology, evolution, fossils and cultural significance
Dinosaurs were a diverse clade of archosaur reptiles that dominated terrestrial ecosystems in the Mesozoic. This article covers origins, anatomy, fossil history, the rise of birds
Dinosaur brains and intelligence
Diplodocid
Diplodocus
Diploglossus
Diploglossus: a genus of New World anguids
Dipodidae
Dipodidae: jerboas, jumping mice and birch mice
Diprotodon
Diprotodon: Largest Pleistocene Marsupial of Australia
Diprotodont
Diprotodontia: The Australasian marsupial order
Dire wolf
Dire wolf (Canis dirus): Prehistoric predator of the Americas
Discoglossidae
Discoglossidae — disc‑tongued frogs: overview, genera, distribution and biology
Diurnal
Diurnal: daytime activity patterns in animals and plants
Dobermann
Dobermann (Doberman Pinscher) — Breed overview and history
Dodo
Dodo (Raphus cucullatus): flightless bird of Mauritius and emblem of extinction
Dog
Dogue de Bordeaux
Dolly (sheep)
Dolly Varden
Dolly Varden (Salvelinus malma)
Dolphin
Dolphin (Delphinidae and relatives): biology, behavior, and conservation
Domestic goat
Domestic sheep
Domestic yak
Domestic yak (Bos grunniens): overview, traits, uses, and origins
Dominance (ethology)
Donkey
Donkey (Equus africanus asinus): description, history, uses, and hybrids
Donkey Kong
Donkey Kong: Nintendo's Gorilla Icon
Dormouse
Dormouse (Gliridae): small hibernating rodents
Dove
Draco (genus)
Draco (genus) — the gliding 'flying' dragons of Southeast Asia
Draco is a genus of small agamid lizards that glide between trees using extendable rib-supported membranes. Found in Asian forests, they feed on insects, lay eggs in soil, and incl
Dracorex
Dracorex — a Late Cretaceous pachycephalosaur and its debated identity
Dracovenator
Dracovenator — Early Jurassic carnivorous dinosaur from southern Africa
Dragonfly
Dragonfly: Overview, Anatomy, Life Cycle, Habitat and Evolution
Dreadnoughtus
Dreadnoughtus: Giant titanosaur from the Late Cretaceous of Argentina
Drinker
Dromaeosauridae
Dromornis
Drosophila obscura
Drosophila obscura: common European fruit fly (obscura species group)
Drosophila pseudoobscura
Drosophila pseudoobscura: a model for natural population genetics and speciation