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.
New Guinea Free-tailed Bat
Austronomus kuboriensis
Betsileo Woolly Lemur
Avahi betsileo
Bemaraha Woolly Lemur
Avahi cleesei
Eastern Woolly Lemur
Avahi laniger
Southern Woolly Lemur
Avahi meridionalis
Masoala Woolly Lemur
Avahi mooreorum
Western Woolly Lemur
Avahi occidentalis
Peyrieras's Woolly Lemur
Avahi peyrierasi
Manombo Woolly Lemur
Avahi ramanantsoavani
Sambirano Woolly Lemur
Avahi unicolor
Chital
Axis axis
Calamian Deer
Axis calamianensis
Bawean Deer
Axis kuhlii
Hog Deer
Axis porcinus
Moluccan Babirusa
Babyrousa babyrussa
Sulawesi Babirusa
Babyrousa celebensis
Togian Babirusa
Babyrousa togeanensis
Allen's Yellow Bat
Baeodon alleni
Slender Yellow Bat
Baeodon gracilis
Southern Pygmy Mouse
Baiomys brunneus
Mexican Pygmy Mouse
Baiomys musculus
Northern Pygmy Mouse
Baiomys taylori
Mountain Water Rat
Baiyankamys habbema
Shaw Mayer's Water Rat
Baiyankamys shawmayeri
Bowhead Whale
Balaena mysticetus
Common Minke Whale
Balaenoptera acutorostrata
Antarctic Minke Whale
Balaenoptera bonaerensis
Sei Whale
Balaenoptera borealis
Bryde's Whale
Balaenoptera brydei
Eden's Whale
Balaenoptera edeni
Blue Whale
Balaenoptera musculus
Omura's Whale
Balaenoptera omurai
Fin Whale
Balaenoptera physalus
Rice's Whale
Balaenoptera ricei
Ecuadorian Sac-winged Bat
Balantiopteryx infusca
Thomas's Sac-winged Bat
Balantiopteryx io
Gray Sac-winged Bat
Balantiopteryx plicata
Kampalili Shrew Mouse
Baletemys kampalili
Bornean Spotted-winged Fruit Bat
Balionycteris maculata
Malayan Spotted-winged Fruit Bat
Balionycteris seimundi
Lesser Bandicoot Rat
Bandicota bengalensis
Greater Bandicoot Rat
Bandicota indica
Savile's Bandicoot Rat
Bandicota savilei
Western Barbastelle
Barbastella barbastellus
Beijing Barbastelle
Barbastella beijingensis
Caspian Barbastelle
Barbastella caspica
Eastern Barbastelle
Barbastella darjelingensis
Arabian Barbastelle
Barbastella leucomelas
Japanese Barbastelle
Barbastella pacifica
Eastern Lowland Olingo
Bassaricyon alleni
Northern Olingo
Bassaricyon gabbii
Western Lowland Olingo
Bassaricyon medius
Olinguito
Bassaricyon neblina
Ringtail
Bassariscus astutus
Cacomistle
Bassariscus sumichrasti
Namaqua Dune Mole-rat
Bathyergus janetta
Cape Dune Mole-rat
Bathyergus suillus
Large-toothed Hairy-tailed Rat
Batomys dentatus
Luzon Cordillera Hairy-tailed Rat
Batomys grantii
Hamiguitan Hairy-tailed Rat
Batomys hamiguitan