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.
Hotson's Five-toed Jerboa
Scarturus hotsoni
Southern Small Five-toed Jerboa
Scarturus indicus
Four-toed Jerboa
Scarturus tetradactylus
Vinogradov's Jerboa
Scarturus vinogradovi
Williams's Jerboa
Scarturus williamsi
Neotropical Pygmy Squirrel
Sciurillus pusillus
Bioko Squirrel Galago
Sciurocheirus alleni
Gabon Squirrel Galago
Sciurocheirus gabonensis
Makande Squirrel Galago
Sciurocheirus makandensis
Pere David's Rock Squirrel
Sciurotamias davidianus
Forrest's Rock Squirrel
Sciurotamias forresti
Abert's Squirrel
Sciurus aberti
Guianan Squirrel
Sciurus aestuans
Allen's Squirrel
Sciurus alleni
Caucasian Squirrel
Sciurus anomalus
Arizona Gray Squirrel
Sciurus arizonensis
Red-bellied Squirrel
Sciurus aureogaster
Brazilian Squirrel
Sciurus brasiliensis
Eastern Gray Squirrel
Sciurus carolinensis
Collie's Squirrel
Sciurus colliaei
Deppe's Squirrel
Sciurus deppei
Red-tailed Squirrel
Sciurus granatensis
Western Gray Squirrel
Sciurus griseus
Bolivian Squirrel
Sciurus ignitus
Northern Amazon Red Squirrel
Sciurus igniventris
Japanese Squirrel
Sciurus lis
Calabrian Black Squirrel
Sciurus meridionalis
Mexican Fox Squirrel
Sciurus nayaritensis
White-naped Squirrel
Sciurus nebouxii
Eastern Fox Squirrel
Sciurus niger
Peters's Squirrel
Sciurus oculatus
Pacheco's Squirrel
Sciurus pachecoi
Andean Squirrel
Sciurus pucheranii
Junin Red Squirrel
Sciurus pyrrhinus
Richmond's Squirrel
Sciurus richmondi
Southern Amazon Red Squirrel
Sciurus spadiceus
Guayaquil Squirrel
Sciurus stramineus
Variegated Squirrel
Sciurus variegatoides
Eurasian Red Squirrel
Sciurus vulgaris
Yucatán Squirrel
Sciurus yucatanensis
Ega Long-tongued Bat
Scleronycteris ega
Gray South American Spiny Mouse
Scolomys melanops
Ucayali South American Spiny Mouse
Scolomys ucayalensis
Rüppell's Broad-nosed Bat
Scoteanax rueppellii
Short-tailed Singing Mouse
Scotinomys teguina
Long-tailed Singing Mouse
Scotinomys xerampelinus
White-throated Lesser House Bat
Scotoecus albigula
Light-winged Lesser House Bat
Scotoecus albofuscus
Hinde's Lesser House Bat
Scotoecus hindei
Dark-winged Lesser House Bat
Scotoecus hirundo
Desert Yellow Lesser House Bat
Scotoecus pallidus
Harlequin Bat
Scotomanes ornatus
Bergmans's Fruit Bat
Scotonycteris bergmansi
Hayman's Fruit Bat
Scotonycteris occidentalis
Zenker's Fruit Bat
Scotonycteris zenkeri
East African Yellow Bat
Scotophilus altilis
Andrew Rebori's Yellow Bat
Scotophilus andrewreborii
Réunion Yellow Bat
Scotophilus borbonicus
Eritrean Yellow Bat
Scotophilus colias
Sody's Yellow Bat
Scotophilus collinus