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.
Moon Mountains Striped Mouse
Hybomys lunaris
Cameroon Highland Striped Mouse
Hybomys rufocanus
Peters's Striped Mouse
Hybomys univittatus
Spotted-necked Otter
Hydrictis maculicollis
Greater Capybara
Hydrochoerus hydrochaeris
Lesser Capybara
Hydrochoerus isthmius
Steller's Sea Cow
Hydrodamalis gigas
Common Water Rat
Hydromys chrysogaster
Husson's Water Rat
Hydromys hussoni
New Britain Water Rat
Hydromys neobrittanicus
Ziegler's Water Rat
Hydromys ziegleri
Water Deer
Hydropotes inermis
Leopard Seal
Hydrurga leptonyx
Water Chevrotain
Hyemoschus aquaticus
Kalinowski's Opossum
Hyladelphys kalinowskii
Bolivian Rice Rat
Hylaeamys acritus
Azara's Rice Rat
Hylaeamys megacephalus
Sowbug Rice Rat
Hylaeamys oniscus
Western Amazonian Rice Rat
Hylaeamys perenensis
Atlantic Forest Rice Rat
Hylaeamys seuanezi
Tate's Rice Rat
Hylaeamys tatei
Yungas Rice Rat
Hylaeamys yunganus
Western Gray Gibbon
Hylobates abbotti
Agile Gibbon
Hylobates agilis
Bornean White-bearded Gibbon
Hylobates albibarbis
Eastern Gray Gibbon
Hylobates funereus
Kloss's Gibbon
Hylobates klossii
Lar Gibbon
Hylobates lar
Moloch Gibbon
Hylobates moloch
Southern Gray Gibbon
Hylobates muelleri
Pileated Gibbon
Hylobates pileatus
Giant Forest Hog
Hylochoerus meinertzhageni
Bornean Short-tailed Gymnure
Hylomys dorsalis
Dalat Gymnure
Hylomys macarong
Max's Short-tailed Gymnure
Hylomys maxi
Dwarf Gymnure
Hylomys parvus
Northern Short-tailed Gymnure
Hylomys peguensis
Javan Short-tailed Gymnure
Hylomys suillus
Leuser Gymnure
Hylomys vorax
Beaded Wood Mouse
Hylomyscus aeta
Allen's Wood Mouse
Hylomyscus alleni
Ansell's Wood Mouse
Hylomyscus anselli
Eastern Arc Wood Mouse
Hylomyscus arcimontensis
Baer's Wood Mouse
Hylomyscus baeri
Angolan Wood Mouse
Hylomyscus carillus
Montane Wood Mouse
Hylomyscus denniae
Mount Kenya Wood Mouse
Hylomyscus endorobae
Mount Oku Wood Mouse
Hylomyscus grandis
Heinrichs' Wood Mouse
Hylomyscus heinrichorum
Kerbis-Peterhans's Wood Mouse
Hylomyscus kerbispeterhansi
Mahale Wood Mouse
Hylomyscus mpungamachagorum
Dahomey Gap Wood Mouse
Hylomyscus pamfi
Lesser Wood Mouse
Hylomyscus parvus
Pygmy Wood Mouse
Hylomyscus pygmaeus
West African Wood Mouse
Hylomyscus simus
Stanley's Wood Mouse
Hylomyscus stanleyi
Stella Wood Mouse
Hylomyscus stella
Mother Ellen's Wood Mouse
Hylomyscus thornesmithae
Albertine Rift Wood Mouse
Hylomyscus vulcanorum
Walter Verheyen's Wood Mouse
Hylomyscus walterverheyeni