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.
Timor Forest Rat
Rattus timorensis
Malaysian Field Rat
Rattus tiomanicus
Australian Pale Field Rat
Rattus tunneyi
Turkistan Rat
Rattus turkestanicus
Van Deusen's New Guinea Mountain Rat
Rattus vandeuseni
New Guinea Slender Rat
Rattus verecundus
Australian Long-haired Rat
Rattus villosissimus
Northeastern Xanthurus Rat
Rattus xanthurus
Pale Giant Squirrel
Ratufa affinis
Southern Black Giant Squirrel
Ratufa bicolor
Northern Black Giant Squirrel
Ratufa gigantea
Indian Giant Squirrel
Ratufa indica
Sri Lankan Giant Squirrel
Ratufa macroura
Southern Reedbuck
Redunca arundinum
Mountain Reedbuck
Redunca fulvorufula
Bohor Reedbuck
Redunca redunca
Hairy-soled Conyrat
Reithrodon auritus
Northwestern Conyrat
Reithrodon caurinus
Naked-soled Conyrat
Reithrodon typicus
Oaxacan Highlands Harvest Mouse
Reithrodontomys albilabris
Southern Harvest Mouse
Reithrodontomys australis
Short-nosed Harvest Mouse
Reithrodontomys brevirostris
Sonoran Harvest Mouse
Reithrodontomys burti
Costa Rican Harvest Mouse
Reithrodontomys cherrii
Volcano Harvest Mouse
Reithrodontomys chrysopsis
Talamancan Harvest Mouse
Reithrodontomys creper
Darién Harvest Mouse
Reithrodontomys darienensis
Fulvous Harvest Mouse
Reithrodontomys fulvescens
Chiriquian Harvest Mouse
Reithrodontomys garichensis
Slender Harvest Mouse
Reithrodontomys gracilis
Hairy Harvest Mouse
Reithrodontomys hirsutus
Eastern Harvest Mouse
Reithrodontomys humulis
Western Harvest Mouse
Reithrodontomys megalotis
Mexican Harvest Mouse
Reithrodontomys mexicanus
Small-toothed Harvest Mouse
Reithrodontomys microdon
Plains Harvest Mouse
Reithrodontomys montanus
Musser's Harvest Mouse
Reithrodontomys musseri
Jalisco Harvest Mouse
Reithrodontomys nerterus
Nicaraguan Harvest Mouse
Reithrodontomys paradoxus
Salt-marsh Harvest Mouse
Reithrodontomys raviventris
Rodriguez's Harvest Mouse
Reithrodontomys rodriguezi
Cozumel Harvest Mouse
Reithrodontomys spectabilis
Sumichrast's Harvest Mouse
Reithrodontomys sumichrasti
Narrow-nosed Harvest Mouse
Reithrodontomys tenuirostris
Wagner's Harvest Mouse
Reithrodontomys wagneri
Zacatecan Harvest Mouse
Reithrodontomys zacatecae
West-central Four-striped Grass Rat
Rhabdomys bechuanae
KwaZulu Natal Four-striped Grass Rat
Rhabdomys chakae
Mesic Four-striped Grass Rat
Rhabdomys dilectus
Karoo Four-striped Grass Rat
Rhabdomys intermedius
Xeric Four-striped Grass Rat
Rhabdomys pumilio
Jequitibá Arboreal Mouse
Rhagomys jequitiba
Long-tongued Arboreal Mouse
Rhagomys longilingua
Brazilian Arboreal Mouse
Rhagomys rufescens
Northern Arboreal Mouse
Rhagomys septentrionalis
Tufted Ground Squirrel
Rheithrosciurus macrotis
Mexican Water Mouse
Rheomys mexicanus
Goldman's Water Mouse
Rheomys raptor
Thomas's Water Mouse
Rheomys thomasi
Underwood's Water Mouse
Rheomys underwoodi