Mammals of the WorldMammals of the World: A Photo Database of Every Mammal Species
Mammals are far more diverse than most people realize. Scientists currently recognize roughly 6,871 living species, grouped into about 27 orders and 167 families — from bats (Chiroptera) and rodents (Rodentia), the two largest orders by far, to small, specialized groups like pangolins (Pholidota) and aardvarks (Tubulidentata). Each family shares a distinct evolutionary history, from whales and dolphins (Cetacea) to primates, carnivores, and marsupials, and new species are still being described every year.
This site exists to build a free, open, photo-referenced database of that diversity. We're using it as the reference library for a mammal identification field guide app — the more species that have verified photos attached, the better that app can recognize mammals from a photo in the field. Browse the full species list below, search by common name, scientific name, order, family, or genus, and if you have a photo of a mammal you've encountered, upload it to help fill in the gaps.
Ogilvie Mountains Collared Lemming
Dicrostonyx nunatakensis
Richardson's Collared Lemming
Dicrostonyx richardsoni
Palearctic Collared Lemming
Dicrostonyx torquatus
Unalaska Collared Lemming
Dicrostonyx unalascensis
Brazilian White-eared Opossum
Didelphis albiventris
Southern Black-eared Opossum
Didelphis aurita
Guianan White-eared Opossum
Didelphis imperfecta
Northern Black-eared Opossum
Didelphis marsupialis
Andean White-eared Opossum
Didelphis pernigra
Southern White-eared Opossum
Didelphis poecilotus
Virginia Opossum
Didelphis virginiana
Martino's Dinaric Vole
Dinaromys bogdanovi
Western Dinaric Vole
Dinaromys longipedis
Pacarana
Dinomys branickii
Crump's Rat
Diomys crumpi
Hairy-legged Vampire Bat
Diphylla ecaudata
Hose's Palm Civet
Diplogale hosei
Piebald Shrew
Diplomesodon pulchellus
Sonnerat's Shrew
Diplomesodon sonnerati
Colombian Rufous Tree-rat
Diplomys caniceps
Central American Rufous Tree-rat
Diplomys labilis
Ryukyu Islands Tree Rat
Diplothrix legata
Agile Kangaroo Rat
Dipodomys agilis
California Kangaroo Rat
Dipodomys californicus
Gulf Coast Kangaroo Rat
Dipodomys compactus
Desert Kangaroo Rat
Dipodomys deserti
Texas Kangaroo Rat
Dipodomys elator
San Quintin Kangaroo Rat
Dipodomys gravipes
Heermann's Kangaroo Rat
Dipodomys heermanni
Giant Kangaroo Rat
Dipodomys ingens
Merriam's Kangaroo Rat
Dipodomys merriami
Chisel-toothed Kangaroo Rat
Dipodomys microps
Nelson's Kangaroo Rat
Dipodomys nelsoni
San Joaquin Kangaroo Rat
Dipodomys nitratoides
Ord's Kangaroo Rat
Dipodomys ordii
Plateau Kangaroo Rat
Dipodomys ornatus
Panamint Kangaroo Rat
Dipodomys panamintinus
Phillips's Kangaroo Rat
Dipodomys phillipsii
Dulzura Kangaroo Rat
Dipodomys simulans
Banner-tailed Kangaroo Rat
Dipodomys spectabilis
Stephens's Kangaroo Rat
Dipodomys stephensi
Narrow-faced Kangaroo Rat
Dipodomys venustus
Qaidam Three-toed Jerboa
Dipus deasyi
Northern Three-toed Jerboa
Dipus sagitta
Feather-tailed Possum
Distoechurus pennatus
Andersen's Naked-backed Fruit Bat
Dobsonia anderseni
Beaufort's Naked-backed Fruit Bat
Dobsonia beauforti
Philippine Naked-backed Fruit Bat
Dobsonia chapmani
Halmahera Naked-backed Fruit Bat
Dobsonia crenulata
Biak Naked-backed Fruit Bat
Dobsonia emersa
Sulawesi Naked-backed Fruit Bat
Dobsonia exoleta
Solomons Naked-backed Fruit Bat
Dobsonia inermis
New Guinea Naked-backed Fruit Bat
Dobsonia magna
Lesser Naked-backed Fruit Bat
Dobsonia minor
Moluccan Naked-backed Fruit Bat
Dobsonia moluccensis
Panniet Naked-backed Fruit Bat
Dobsonia pannietensis
Western Naked-backed Fruit Bat
Dobsonia peronii
New Britain Naked-backed Fruit Bat
Dobsonia praedatrix
Greenish Naked-backed Fruit Bat
Dobsonia viridis
Patagonian Mara
Dolichotis patagonum