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.
Common Swift Fruit Bat
Thoopterus nigrescens
Suhaniah's Swift Fruit Bat
Thoopterus suhaniahae
Lagoa Santa Punare
Thrichomys apereoides
D’Andrea's Punare
Thrichomys dandreai
Foster's Punare
Thrichomys fosteri
Jacobina Punare
Thrichomys inermis
Sao Lourenço Punare
Thrichomys laurentius
Pantanal Punare
Thrichomys pachyurus
Lesser Cane Rat
Thryonomys gregorianus
Greater Cane Rat
Thryonomys swinderianus
Thylacine
Thylacinus cynocephalus
Dry Chaco Fat-tailed Opossum
Thylamys bruchi
Mesopotamian Fat-tailed Opossum
Thylamys citellus
Elegant Fat-tailed Opossum
Thylamys elegans
Karimi's Fat-tailed Opossum
Thylamys karimii
Paraguayan Fat-tailed Opossum
Thylamys macrurus
Pallid Fat-tailed Opossum
Thylamys pallidior
Chacoan Fat-tailed Opossum
Thylamys pulchellus
Common Fat-tailed Opossum
Thylamys pusillus
Argentine Fat-tailed Opossum
Thylamys sponsorius
Tate's Fat-tailed Opossum
Thylamys tatei
Dwarf Fat-tailed Opossum
Thylamys velutinus
Buff-bellied Fat-tailed Opossum
Thylamys venustus
Rufous-bellied Pademelon
Thylogale billardierii
New Guinea Pademelon
Thylogale brownii
Dusky Pademelon
Thylogale brunii
Calaby's Pademelon
Thylogale calabyi
Red-legged Pademelon
Thylogale stigmatica
Red-necked Pademelon
Thylogale thetis
De Vivo's Disk-winged Bat
Thyroptera devivoi
Peters's Disk-winged Bat
Thyroptera discifera
LaVal's Disk-winged Bat
Thyroptera lavali
Spix's Disk-winged Bat
Thyroptera tricolor
Patricia's Disk-winged Bat
Thyroptera wynneae
Balsas Gray Mouse Opossum
Tlacuatzin balsasensis
Tehuantepec Gray Mouse Opossum
Tlacuatzin canescens
Yucatán Gray Mouse Opossum
Tlacuatzin gaumeri
Tres Marías Gray Mouse Opossum
Tlacuatzin insularis
Northern Gray Mouse Opossum
Tlacuatzin sinaloae
Okinawa Island Spiny Rat
Tokudaia muenninki
Amami Spiny Rat
Tokudaia osimensis
Tokunoshima Spiny Rat
Tokudaia tokunoshimensis
Southern Three-banded Armadillo
Tolypeutes matacus
Brazilian Three-banded Armadillo
Tolypeutes tricinctus
Blunt-eared Bat
Tomopeas ravum
Northern Stripe-headed Round-eared Bat
Tonatia bakeri
Greater Round-eared Bat
Tonatia bidens
Southern Stripe-headed Round-eared Bat
Tonatia maresi
Daovantien's Limestone Rat
Tonkinomys daovantieni
White-bellied Toro
Toromys albiventris
Black Toro
Toromys grandis
Peruvian Toro
Toromys rhipidurus
Common Fringe-lipped Bat
Trachops cirrhosus
Central American Fringe-lipped Bat
Trachops coffini
Atlantic Forest Fringe-lipped Bat
Trachops ehrhardti
East Javan Langur
Trachypithecus auratus
Tenasserim Langur
Trachypithecus barbei
Indochinese Gray Langur
Trachypithecus crepusculus
Sunda Silvery Langur
Trachypithecus cristatus
Delacour's Langur
Trachypithecus delacouri