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.
Asia Minor Ground Squirrel
Spermophilus xanthoprymnus
Blanford's Fruit Bat
Sphaerias blanfordi
Visored Bat
Sphaeronycteris toxophyllum
Admiralty Spotted Cuscus
Spilocuscus kraemeri
Common Spotted Cuscus
Spilocuscus maculatus
Australian Spotted Cuscus
Spilocuscus nudicaudatus
Waigeo Spotted Cuscus
Spilocuscus papuensis
Black Spotted Cuscus
Spilocuscus rufoniger
Blue-eyed Spotted Cuscus
Spilocuscus wilsoni
Southern Spotted Skunk
Spilogale angustifrons
Western Spotted Skunk
Spilogale gracilis
Plains Spotted Skunk
Spilogale interrupta
Desert Spotted Skunk
Spilogale leucoparia
Alleghanian Spotted Skunk
Spilogale putorius
Pygmy Spotted Skunk
Spilogale pygmaea
Yucatán Spotted Skunk
Spilogale yucatanensis
Ohia Rat
Srilankamys ohiensis
Bocage's Fat Mouse
Steatomys bocagei
Northwestern Fat Mouse
Steatomys caurinus
Dainty Fat Mouse
Steatomys cuppedius
Jackson's Fat Mouse
Steatomys jacksoni
Krebs's Fat Mouse
Steatomys krebsii
Pousargues's Fat Mouse
Steatomys opimus
Tiny Fat Mouse
Steatomys parvus
Common Fat Mouse
Steatomys pratensis
Pantropical Spotted Dolphin
Stenella attenuata
Clymene Dolphin
Stenella clymene
Striped Dolphin
Stenella coeruleoalba
Atlantic Spotted Dolphin
Stenella frontalis
Spinner Dolphin
Stenella longirostris
Rough-toothed Dolphin
Steno bredanensis
White-footed Ethiopian Rat
Stenocephalemys albipes
White-tailed Ethiopian Rat
Stenocephalemys albocaudatus
Gray-tailed Ethiopian Rat
Stenocephalemys griseicauda
Rupp's Ethiopian Rat
Stenocephalemys ruppi
Sokolov's Ethiopian Rat
Stenocephalemys sokolovi
Zima's Ethiopian Rat
Stenocephalemys zimai
Narrow-headed Vole
Stenocranius gregalis
Radde's Vole
Stenocranius raddei
Red Fruit Bat
Stenoderma rufum
Long-haired Fruit Bat
Stenonycteris lanosa
Target Rat
Stochomys longicaudatus
Small Sulawesi Cuscus
Strigocuscus celebensis
Small Sangihe Cuscus
Strigocuscus sangirensis
Adriana's Yellow-shouldered Bat
Sturnira adrianae
Dominica Yellow-shouldered Bat
Sturnira angeli
Arata-Thomas Yellow-shouldered Bat
Sturnira aratathomasi
Baker's Yellow-shouldered Bat
Sturnira bakeri
Bidentate Yellow-shouldered Bat
Sturnira bidens
Boada's Yellow-shouldered Bat
Sturnira boadai
Bogotá Yellow-shouldered Bat
Sturnira bogotensis
Burton's Yellow-shouldered Bat
Sturnira burtonlimi
Hairy Yellow-shouldered Bat
Sturnira erythromos
Gianna's Yellow-shouldered Bat
Sturnira giannae
Honduran Yellow-shouldered Bat
Sturnira hondurensis
Choco Yellow-shouldered Bat
Sturnira koopmanhilli
Little Yellow-shouldered Bat
Sturnira lilium
Highland Yellow-shouldered Bat
Sturnira ludovici
Luis's Yellow-shouldered Bat
Sturnira luisi
Greater Yellow-shouldered Bat
Sturnira magna