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.
Mayor's Mouse
Mus mayori
Sub-Saharan Pygmy Mouse
Mus minutoides
West African Pygmy Mouse
Mus musculoides
House Mouse
Mus musculus
Neave's Mouse
Mus neavei
Blyth's Mouse
Mus nitidulus
Ubangui Mouse
Mus oubanguii
Indochinese Shrew-like Mouse
Mus pahari
Phillips's Mouse
Mus phillipsi
Flat-haired Mouse
Mus platythrix
Ethiopian Mouse
Mus proconodon
Saxicolous Mouse
Mus saxicola
Peters's Mouse
Mus setulosus
Setzer's Mouse
Mus setzeri
Shortridge's Mouse
Mus shortridgei
Thomas's Mouse
Mus sorella
Mound-building Mouse
Mus spicilegus
Western Mediterranean Mouse
Mus spretus
Delicate Mouse
Mus tenellus
Earth-colored Mouse
Mus terricolor
Gray-bellied Mouse
Mus triton
Javan Shrew-like Mouse
Mus vulcani
Hazel Dormouse
Muscardinus avellanarius
Banana Bat
Musonycteris harrisoni
Mount Anacuao Tree Mouse
Musseromys anacuao
Mount Pulag Tree Mouse
Musseromys beneficus
Mount Banahaw Tree Mouse
Musseromys gulantang
Mount Amuyao Tree Mouse
Musseromys inopinatus
Chinese Pygmy Weasel
Mustela aistoodonnivalis
Altai Mountain Weasel
Mustela altaica
Beringian Ermine
Mustela erminea
Steppe Polecat
Mustela eversmanii
Domestic Ferret
Mustela furo
Haida Ermine
Mustela haidarum
Japanese Weasel
Mustela itatsi
Yellow-bellied Weasel
Mustela kathiah
European Mink
Mustela lutreola
Indonesian Mountain Weasel
Mustela lutreolina
Hengduan Mountain Weasel
Mustela mopbie
Black-footed Ferret
Mustela nigripes
Least Weasel
Mustela nivalis
Malay Weasel
Mustela nudipes
European Polecat
Mustela putorius
American Ermine
Mustela richardsonii
Siberian Weasel
Mustela sibirica
Back-striped Weasel
Mustela strigidorsa
Sunda Stink Badger
Mydaus javanensis
Palawan Stink Badger
Mydaus marchei
Dybowski's Three-toed Grass Rat
Mylomys dybowskii
Ethiopian Three-toed Grass Rat
Mylomys rex
Coypu
Myocastor coypus
Woolley's Three-striped Dasyure
Myoictis leucura
Müller's Three-striped Dasyure
Myoictis melas
Wallace's Three-striped Dasyure
Myoictis wallacii
Tate's Three-striped Dasyure
Myoictis wavica
Ognev's Mouse-tailed Dormouse
Myomimus personatus
Roach's Mouse-tailed Dormouse
Myomimus roachi
Setzer's Mouse-tailed Dormouse
Myomimus setzeri
Verreaux's Meadow Mouse
Myomyscus verreauxi
Angolan Soft-furred Fruit Bat
Myonycteris angolensis