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.
Groove-toothed Cotton Rat
Sigmodon alstoni
Arizona Cotton Rat
Sigmodon arizonae
Tawny-bellied Cotton Rat
Sigmodon fulviventer
Burmeister's Cotton Rat
Sigmodon hirsutus
Hispid Cotton Rat
Sigmodon hispidus
Ecuadorean Cotton Rat
Sigmodon inopinatus
White-eared Cotton Rat
Sigmodon leucotis
West Mexican Cotton Rat
Sigmodon mascotensis
Yellow-nosed Cotton Rat
Sigmodon ochrognathus
Peruvian Cotton Rat
Sigmodon peruanus
Miahuatlan Cotton Rat
Sigmodon planifrons
Toltec Cotton Rat
Sigmodon toltecus
Montane Cotton Rat
Sigmodon zanjonensis
Alfaro's Water Rat
Sigmodontomys alfari
Pig-tailed Langur
Simias concolor
Chestnut Dunnart
Sminthopsis archeri
Kakadu Dunnart
Sminthopsis bindi
Butler's Dunnart
Sminthopsis butleri
Fat-tailed Dunnart
Sminthopsis crassicaudata
Little Long-tailed Dunnart
Sminthopsis dolichura
Julia Creek Dunnart
Sminthopsis douglasi
Froggatt's Dunnart
Sminthopsis froggatti
Gray-bellied Dunnart
Sminthopsis fuliginosa
Gilbert's Dunnart
Sminthopsis gilberti
White-tailed Dunnart
Sminthopsis granulipes
Greater Hairy-footed Dunnart
Sminthopsis hirtipes
White-footed Dunnart
Sminthopsis leucopus
Stripe-faced Dunnart
Sminthopsis macroura
Common Dunnart
Sminthopsis murina
Western Red-cheeked Dunnart
Sminthopsis nitela
Ooldea Dunnart
Sminthopsis ooldea
Sandhill Dunnart
Sminthopsis psammophila
Stalker's Dunnart
Sminthopsis stalkeri
Eastern Red-cheeked Dunnart
Sminthopsis virginiae
Lesser Hairy-footed Dunnart
Sminthopsis youngsoni
Giant Pangolin
Smutsia gigantea
Ground Pangolin
Smutsia temminckii
Marcano's Solenodon
Solenodon marcanoi
Hispaniolan Solenodon
Solenodon paradoxus
Pearson's Long-clawed Shrew
Solisorex pearsoni
Poncelet's Giant Rat
Solomys ponceleti
Ugi Island Giant Rat
Solomys salamonis
Bougainville Island Giant Rat
Solomys salebrosus
Isabel Island Giant Rat
Solomys sapientis
Buka Island Giant Rat
Solomys spriggsarum
Sommer's Sulawesi Rat
Sommeromys macrorhinos
Paraguayan Rice Rat
Sooretamys angouya
Eastern Water Shrew
Sorex albibarbis
Alpine Shrew
Sorex alpinus
Alto Shrew
Sorex altoensis
Valais Shrew
Sorex antinorii
Common Shrew
Sorex araneus
Arctic Shrew
Sorex arcticus
Arizona Shrew
Sorex arizonae
Tian Shan Shrew
Sorex asper
Lesser Striped Shrew
Sorex bedfordiae
Marsh Shrew
Sorex bendirii
Buchara Shrew
Sorex buchariensis
Laxmann's Shrew
Sorex caecutiens
Kamchatka Shrew
Sorex camtschaticus