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.
Newton's Long-fingered Bat
Miniopterus newtoni
Nimba Long-fingered Bat
Miniopterus nimbae
Australian Long-fingered Bat
Miniopterus orianae
Pallid Long-fingered Bat
Miniopterus pallidus
Philippine Long-fingered Bat
Miniopterus paululus
Peterson's Long-fingered Bat
Miniopterus petersoni
Phillips's Long-fingered Bat
Miniopterus phillipsi
Small Long-fingered Bat
Miniopterus pusillus
Loyalty Long-fingered Bat
Miniopterus robustior
Schreibers's Long-fingered Bat
Miniopterus schreibersii
Shortridge's Long-fingered Bat
Miniopterus shortridgei
Sororcula Long-fingered Bat
Miniopterus sororculus
Srini's Long-fingered Bat
Miniopterus srinii
Great Long-fingered Bat
Miniopterus tristis
Villiers's Long-fingered Bat
Miniopterus villiersi
Wilson's Long-fingered Bat
Miniopterus wilsoni
Northern Talapoin Monkey
Miopithecus ogouensis
Southern Talapoin Monkey
Miopithecus talapoin
Fijian Monkey-faced Fruit Bat
Mirimiri acrodonta
Joffre's Bat
Mirostrellus joffrei
Northern Elephant Seal
Mirounga angustirostris
Southern Elephant Seal
Mirounga leonina
Coquerel's Giant Mouse Lemur
Mirza coquereli
Northern Giant Mouse Lemur
Mirza zaza
Mirza's Western Moss Rat
Mirzamys louiseae
Mirza's Eastern Moss Rat
Mirzamys norahae
Echigo Mole
Mogera etigo
Hainan Mole
Mogera hainana
Small Japanese Mole
Mogera imaizumii
Formosan Mole
Mogera insularis
Kano's Mole
Mogera kanoana
La Touche's Mole
Mogera latouchei
Ussuri Mole
Mogera robusta
Sado Mole
Mogera tokudae
Senkaku Mole
Mogera uchidai
Large Japanese Mole
Mogera wogura
Colombian Dog-faced Bat
Molossops griseiventer
Rufous Dog-faced Bat
Molossops neglectus
Dwarf Dog-faced Bat
Molossops temminckii
Alvarez's Mastiff Bat
Molossus alvarezi
Aztec Mastiff Bat
Molossus aztecus
Bonda Mastiff Bat
Molossus bondae
Coiban Mastiff Bat
Molossus coibensis
Thomas's Mastiff Bat
Molossus currentium
Fenton's Mastiff Bat
Molossus fentoni
Southern Black Mastiff Bat
Molossus fluminensis
Melin's Mastiff Bat
Molossus melini
Pallas's Mastiff Bat
Molossus molossus
Northern Black Mastiff Bat
Molossus nigricans
Paraná River Mastiff Bat
Molossus paranaensis
Miller's Mastiff Bat
Molossus pretiosus
Common Black Mastiff Bat
Molossus rufus
Sinaloan Mastiff Bat
Molossus sinaloae
Pug-nosed Mastiff Bat
Molossus tropidorhynchus
Hispaniolan Mastiff Bat
Molossus verrilli
Mediterranean Monk Seal
Monachus monachus
Sepia Short-tailed Opossum
Monodelphis adusta
Northern Three-striped Opossum
Monodelphis americana
Arlindo's Short-tailed Opossum
Monodelphis arlindoi
Guyanan Short-tailed Opossum
Monodelphis brevicaudata