• Cygnus columbianus columbianus (Ord, 1815) fluitzwaan
  tundra swan
  
• Cygnus cygnus (Linnaeus, 1758) wilde zwaan
  whooper swan
  
• Cygnus olor (Gmelin, 1789) knobbelzwaan
  mute swan
  
• Cymbirhynchus macrorhynchos (Gmelin, 1788) zwart-rode hapvogel
  black-and-red broadbill
  
• Cyphogastra javanica Saunders, 1871 prachtkever
  jewel beetle
  
• Cypraea tigris Linnaeus, 1758 tiger cowry
  tijgerkauri
  
• Cyprinus carpio Linnaeus, 1758 karper
  common carp
  
• Cyrtodiopsis dalmanni (Wiedemann, 1830) steeloogvlieg
  stalk-eyed fly
  
• Cyrtophora moluccensis (Doleschall, 1857) tentspin
  tent spider
  
• Cystophora cristata (Erxleben, 1777) klapmuts
  hooded seal
  
• Daboia russelii (Shaw & Nodder, 1797) Russells adder
  Russell’s viper
  
• Dacelo leachii Vigors & Horsfield, 1827 blauwvleugelkookaburra
  blue-winged kookaburra
  
• Dacelo novaeguineae (Hermann, 1783) kookaburra
  laughing kookaburra
  
• Dactylioceras athleticum (Simpson, 1855) ammoniet
  ammonite
  
• Dactylis glomerata L. kropaar
  cock's-foot
  
• Daldinia concentrica (Bolton) Ces. & De Not. kogelhoutskoolzwam
  King Alfred's cakes
  
• Dalmanites limuloides (Green) trilobiet
  trilobite
  
• Dama dama (Linnaeus, 1758) damhert
  fallow deer
  
• danburiet danburiet
  danburite
  
• Danio rerio (Hamilton, 1822) zebravis
  zebrafish
  
• Dapedium politum Leach (1822) straalvinnige vis
  ray-finned fish
  
• Daphne mezereum L. rood peperboompje
  mezereon
  
• Daphnia pulex Leydig, 1860 gewone takwatervlo
  common water flea
  
• Dardanus megistos (Herbst, 1804) white-spotted hermit crab
  rode heremietkreeft
  
• Darlingtonia californica Torr. cobralelie
  cobra lily
  
• Darwinius masillae Franzen et al. (2009) fossiele halfaap
  early primate
  
• Dasyprocta leporina (Linnaeus, 1758) goudhaas
  red-rumped agouti
  
• Dasypus novemcinctus Linnaeus, 1758 negenbandgordeldier
  nine-banded armadillo
  
• Daubentonia madagascariensis vingerdier
  
• Deilephila elpenor (Linnaeus, 1758) groot avondrood
  elephant hawk moth
  
• Deinogalerix koenigswaldi Freudenthal 1972 reuzenhaaregel
  giant gymnure
  
• Deinotherium giganteum (Kaup, 1829) slurfdrager
  proboscidean
  
• Delichon urbicum (Linnaeus, 1758) huiszwaluw
  common house martin
  
• Delonix regia (Hook.) Raf. flamboyant
  royal poinciana
  
• Delphinapterus leucas (Pallas, 1776) beloega
  beluga whale
  
• Delphinus delphis Linnaeus, 1758 gewone dolfijn
  common dolphin
  
• demantoid demantoid
  demantoid
  
• Dendrobates auratus (Girard, 1855) gouden gifkikker
  green and black dart-poison frog
  
• Dendrobates leucomelas Steindachner, 1864 yellow-banded poison frog
  bijengifkikker
  
• Dendrobates tinctorius (Cuvier, 1797) dyeing dart frog
  verfgifkikker
  
• Dendrocopos major (Linnaeus, 1758) grote bonte specht
  great spotted woodpecker
  
• Dendrolagus dorianus Ramsay, 1883 doriaboomkangoeroe
  Doria's tree-kangaroo
  
• Dendrolagus matschiei Forster & Rothschild, 1907 matschieboomkangoeroe
  Matschie's tree-kangaroo
  
• Dermochelys coriacea (Vandelli, 1761) lederschildpad
  leatherback sea turtle
  
• Desmana thermalis Kormos, 1930 Russian desman
  watermol
  
• diamant diamant
  diamond
  
• Diatrype disciformis (Hoffm.:Fr.) Fr. hoekig schorsschijfje
  beech barkspot
  
• Dickinsonia costata Sprigg 1947 Dickinsonia
  Dickinsonia
  
• Dicrurus leucophaeus Vieillot, 1817 grijze drongo
  ashy drongo
  
• Dicrurus paradiseus (Linnaeus, 1766) vlaggendrongo
  greater racket-tailed drongo