Animals
Articles about animal species, behavior and classification.
Drosophila subobscura
Drosophila subobscura — a Palearctic fruit fly used in evolutionary studies
Drosophilinae
Drosophilinae: diversity, taxonomy, evolution and scientific importance
Dryophytes gratiosus
Dryophytes gratiosus — barking treefrog
Dryosauridae
Dryosauridae — small basal iguanodont ornithopods
Dryosaurus
Dryptosaurus
Dryptosaurus — a Late Cretaceous tyrannosauroid from eastern North America
Dsungaripterus
Dsungaripterus: the upturned-beaked pterosaur of the Junggar Basin
Dubreuillosaurus
Duchess lorikeet
Duck
Dugong
Dugong (Dugong dugon)
Duke Lemur Center
Dung beetle
Dung beetle: ecology, behavior, taxonomy and human significance
Duquesney's galliwasp
Duquesney's galliwasp (Celestus duquesneyi)
Duriavenator
Duttaphrynus
Duttaphrynus himalayanus
Duttaphrynus himalayanus — Himalayan toad
Duttaphrynus melanostictus
Duttaphrynus melanostictus — Common Asian (Indian) Toad
Duttaphrynus olivaceus
Duttaphrynus olivaceus — the olive (Baluchistan) toad
Duttaphrynus stomaticus
Dwarf elephant
Dwarf hamster
Dysalotosaurus
Dysalotosaurus: a small Late Jurassic ornithopod
Dytiscidae
Dytiscidae — predaceous diving beetles
Eagle
Eagle: large diurnal birds of prey — overview, biology and conservation
Eagle ray
Eared dove
Eared seal
Otariidae — Eared Seals (Sea Lions and Fur Seals): Biology, Distribution, and Conservation
Earless seal
Earless seals (Phocidae)
Earthworm
Earwig
Earwig (Dermaptera): appearance, biology, and interactions with people
Eastern black rhinoceros
Eastern black rhinoceros (Diceros bicornis michaeli)
Eastern black-and-white colobus
Eastern bluebird
Eastern cottontail
Eastern diamondback rattlesnake
Eastern diamondback rattlesnake (Crotalus adamanteus)
Eastern gorilla
Eastern grey kangaroo
Eastern long-beaked echidna
Eastern long‑beaked echidna (Zaglossus bartoni)
Eastern lowland gorilla
Eastern lowland gorilla (Grauer's gorilla)
Eastern quoll
Eastern quoll (Dasyurus viverrinus)
Eastern wallaroo
Echidna
Echidna — the spiny anteater of Australia and New Guinea
Echinoderm
Echinodon
Echinodon — a small heterodontosaurian dinosaur genus
Echis
Echis — saw‑scaled vipers (venomous snakes of dry regions)
Echiura
Echiura (spoon worms): unsegmented marine worms and their biology