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.
Arends's Golden Mole
Carpitalpa arendsi
Black-tailed Dwarf Cloud Rat
Carpomys melanurus
Brown-tailed Dwarf Cloud Rat
Carpomys phaeurus
Groove-toothed Spiny-rat
Carterodon sulcidens
Gansu Red-backed Vole
Caryomys eva
Kolan Red-backed Vole
Caryomys inez
Short-palated Fruit Bat
Casinycteris argynnis
Campo-Ma'an Fruit Bat
Casinycteris campomaanensis
Pohle's Fruit Bat
Casinycteris ophiodon
Alfaro's Rice Rat
Casiomys alfaroi
Chapman's Rice Rat
Casiomys chapmani
Guerrero Rice Rat
Casiomys guerrerensis
Black-eared Rice Rat
Casiomys melanotis
Highland Rice Rat
Casiomys rhabdops
Long-nosed Rice Rat
Casiomys rostratus
Cloud Forest Rice Rat
Casiomys saturatior
Surat Helmeted Bat
Cassistrellus dimissus
Yok Don Helmeted Bat
Cassistrellus yokdonensis
North American Beaver
Castor canadensis
Eurasian Beaver
Castor fiber
Serra do Mar Grass Mouse
Castoria angustidens
Bay Cat
Catopuma badia
Asian Golden Cat
Catopuma temminckii
Brazilian Guinea Pig
Cavia aperea
Shiny Guinea Pig
Cavia fulgida
Santa Catarina's Guinea Pig
Cavia intermedia
Greater Guinea Pig
Cavia magna
Sacha Guinea Pig
Cavia patzelti
Domestic Guinea Pig
Cavia porcellus
Montane Guinea Pig
Cavia tschudii
Southern Pygmy Marmoset
Cebuella niveiventris
Northern Pygmy Marmoset
Cebuella pygmaea
White-fronted Capuchin
Cebus albifrons
White-faced Capuchin
Cebus capucinus
Ka'apor Capuchin
Cebus kaapori
Weeper Capuchin
Cebus olivaceus
Thomas's Shaggy Bat
Centronycteris centralis
Common Shaggy Bat
Centronycteris maximiliani
Wrinkle-faced Bat
Centurio senex
Western Tarsier
Cephalopachus bancanus
Brooke's Duiker
Cephalophorus brookei
Peters's Duiker
Cephalophorus callipygus
Kivu Duiker
Cephalophorus kivuensis
White-bellied Duiker
Cephalophorus leucogaster
Natal Red Duiker
Cephalophorus natalensis
Black Duiker
Cephalophorus niger
Black-fronted Duiker
Cephalophorus nigrifrons
Ogilby's Duiker
Cephalophorus ogilbyi
Rwenzori Red Duiker
Cephalophorus rubidus
Red-flanked Duiker
Cephalophorus rufilatus
Weyns's Duiker
Cephalophorus weynsi
Banded Duiker
Cephalophula zebra
Bay Duiker
Cephalophus dorsalis
Jentink's Duiker
Cephalophus jentinki
Yellow-backed Duiker
Cephalophus silvicultor
Abbott's Duiker
Cephalophus spadix
Peale's Dolphin
Cephalorhynchus australis
Commerson's Dolphin
Cephalorhynchus commersonii
Hourglass Dolphin
Cephalorhynchus cruciger
Chilean Dolphin
Cephalorhynchus eutropia