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.
Karoo Vlei Rat
Otomys unisulcatus
Udzungwa Vlei Rat
Otomys uzungwensis
Willan's Vlei Rat
Otomys willani
Yalden's Vlei Rat
Otomys yaldeni
Mount Kilimanjaro Vlei Rat
Otomys zinki
Desert Long-eared Bat
Otonycteris hemprichii
Turkestani Long-eared Bat
Otonycteris leucophaea
Yucatán Vesper Rat
Otonyctomys hatti
Luzon Pygmy Fruit Bat
Otopteropus cartilagonodus
California Ground Squirrel
Otospermophilus beecheyi
Douglas's Ground Squirrel
Otospermophilus douglasii
Common Rock Squirrel
Otospermophilus variegatus
La Pera Climbing Rat
Ototylomys chiapensis
Big-eared Climbing Rat
Ototylomys phyllotis
Oribi
Ourebia ourebi
Muskox
Ovibos moschatus
Argali
Ovis ammon
Domestic Sheep
Ovis aries
Bighorn Sheep
Ovis canadensis
Thinhorn Sheep
Ovis dalli
Asian Mouflon
Ovis gmelinii
Snow Sheep
Ovis nivicola
Urial
Ovis vignei
Southern Páramo Hocicudo
Oxymycterus akodontius
Amazonian Hocicudo
Oxymycterus amazonicus
Mount Caparao Hocicudo
Oxymycterus caparaoe
Atlantic Forest Hocicudo
Oxymycterus dasytrichus
Spy Hocicudo
Oxymycterus delator
Small Yungas Hocicudo
Oxymycterus hiska
Quechuan Hocicudo
Oxymycterus hucucha
Inca Hocicudo
Oxymycterus inca
Itapevi Hocicudo
Oxymycterus itapeby
Cook's Hocicudo
Oxymycterus josei
Upper Yungas Inca Hocicudo
Oxymycterus juliacae
Darwin's Hocicudo
Oxymycterus nasutus
Elfin Forest Hocicudo
Oxymycterus nigrifrons
Northern Páramo Hocicudo
Oxymycterus paramensis
Quaestor Hocicudo
Oxymycterus quaestor
Red Hocicudo
Oxymycterus rufus
Ravine Hocicudo
Oxymycterus wayku
Cusco Hocicudo
Oxymycterus willkaurco
Beccari's Free-tailed Bat
Ozimops beccarii
Northern Coastal Free-tailed Bat
Ozimops cobourgianus
Cape York Free-tailed Bat
Ozimops halli
Southwestern Free-tailed Bat
Ozimops kitcheneri
Loria's Free-tailed Bat
Ozimops loriae
Lumsden's Free-tailed Bat
Ozimops lumsdenae
Inland Free-tailed Bat
Ozimops petersi
Southern Free-tailed Bat
Ozimops planiceps
Ride's Free-tailed Bat
Ozimops ridei
Pampas Deer
Ozotoceros bezoarticus
Fat-tailed Jird
Pachyuromys duprasi
Harp Seal
Pagophilus groenlandicus
Masked Palm Civet
Paguma larvata
Large Sloth Lemur
Palaeopropithecus ingens
Palawan Mountain Rat
Palawanomys furvus
Black Shrew
Palawanosorex ater
Palawan Moss Shrew
Palawanosorex muscorum
Bonobo
Pan paniscus
Chimpanzee
Pan troglodytes