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.
Underwood's Long-tongued Bat
Hylonycteris underwoodi
Particolored Flying Squirrel
Hylopetes alboniger
Bartels's Flying Squirrel
Hylopetes bartelsi
Hainan Flying Squirrel
Hylopetes electilis
Palawan Flying Squirrel
Hylopetes nigripes
Indochinese Flying Squirrel
Hylopetes phayrei
Jentink's Flying Squirrel
Hylopetes platyurus
Gray-cheeked Flying Squirrel
Hylopetes sagitta
Sipora Flying Squirrel
Hylopetes sipora
Red-cheeked Flying Squirrel
Hylopetes spadiceus
Sumatran Flying Squirrel
Hylopetes winstoni
Western White-eared Giant Rat
Hyomys dammermani
Eastern White-eared Giant Rat
Hyomys goliath
Hog-nosed Shrew Rat
Hyorhinomys stuempkei
Montane Long-nosed Squirrel
Hyosciurus heinrichi
Lowland Long-nosed Squirrel
Hyosciurus ileile
Burrowing Vole
Hyperacrius fertilis
Murree Vole
Hyperacrius wynnei
Northern Bottlenose Whale
Hyperoodon ampullatus
Southern Bottlenose Whale
Hyperoodon planifrons
Wide-toothed Hutia
Hyperplagiodontia araeum
Giant Jumping Rat
Hypogeomys antimena
Hammer-headed Fruit Bat
Hypsignathus monstrosus
Musky Rat Kangaroo
Hypsiprymnodon moschatus
Chocolate Pipistrelle
Hypsugo affinis
Alashanian Pipistrelle
Hypsugo alashanicus
Arabian Pipistrelle
Hypsugo arabicus
Fairy Pipistrelle
Hypsugo ariel
Cadorna's Pipistrelle
Hypsugo cadornae
Long-toothed Pipistrelle
Hypsugo dolichodon
Brown Pipistrelle
Hypsugo imbricatus
Red-brown Pipistrelle
Hypsugo kitcheneri
Lanza's Pipistrelle
Hypsugo lanzai
Burmese Pipistrelle
Hypsugo lophurus
Big-eared Pipistrelle
Hypsugo macrotis
Pungent Pipistrelle
Hypsugo mordax
Peters's Pipistrelle
Hypsugo petersi
Chinese Pipistrelle
Hypsugo pulveratus
Savi's Pipistrelle
Hypsugo savii
Vordermann's Pipistrelle
Hypsugo vordermanni
Cape Porcupine
Hystrix africaeaustralis
Malayan Porcupine
Hystrix brachyura
Thick-spined Porcupine
Hystrix crassispinis
Crested Porcupine
Hystrix cristata
Indian Crested Porcupine
Hystrix indica
Sunda Porcupine
Hystrix javanica
Philippine Porcupine
Hystrix pumila
Sumatran Porcupine
Hystrix sumatrae
Great Evening Bat
Ia io
White-tailed Mongoose
Ichneumia albicauda
Common Crab-eating Rat
Ichthyomys hydrobates
Ecuadorean Crab-eating Rat
Ichthyomys orientalis
Pine's Crab-eating Rat
Ichthyomys pinei
Pittier's Crab-eating Rat
Ichthyomys pittieri
Stolzmann's Crab-eating Rat
Ichthyomys stolzmanni
Tweedy's Crab-eating Rat
Ichthyomys tweedii
Mexican Ground Squirrel
Ictidomys mexicanus
Rio Grande Ground Squirrel
Ictidomys parvidens
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
Zorilla
Ictonyx striatus