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.
Perote Ground Squirrel
Xerospermophilus perotensis
Spotted Ground Squirrel
Xerospermophilus spilosoma
Round-tailed Ground Squirrel
Xerospermophilus tereticaudus
Unstriped Ground Squirrel
Xerus rutilus
Pichi
Zaedyus pichiy
Attenborough's Long-beaked Echidna
Zaglossus attenboroughi
Eastern Long-beaked Echidna
Zaglossus bartoni
Western Long-beaked Echidna
Zaglossus bruijnii
California Sea Lion
Zalophus californianus
Japanese Sea Lion
Zalophus japonicus
Galapagos Sea Lion
Zalophus wollebaeki
Northern Meadow Jumping Mouse
Zapus hudsonius
Southern Meadow Jumping Mouse
Zapus luteus
Central Pacific Jumping Mouse
Zapus montanus
Oregon Jumping Mouse
Zapus oregonus
Southern Pacific Jumping Mouse
Zapus pacificus
Southwestern Jumping Mouse
Zapus princeps
Northwestern Jumping Mouse
Zapus saltator
Northern Pacific Jumping Mouse
Zapus trinotatus
Hildegarde's Broad-headed Mouse
Zelotomys hildegardeae
Woosnam's Broad-headed Mouse
Zelotomys woosnami
Zenkerella
Zenkerella insignis
Cuvier's Beaked Whale
Ziphius cavirostris
Short-tailed Cane Mouse
Zygodontomys brevicauda
Colombian Cane Mouse
Zygodontomys brunneus
Michoacan Pocket Gopher
Zygogeomys trichopus
Common Australian Rock Rat
Zyzomys argurus
Arnhem Land Rock Rat
Zyzomys maini
Carpentarian Rock Rat
Zyzomys palatalis
Central Australian Rock Rat
Zyzomys pedunculatus
Kimberley Rock Rat
Zyzomys woodwardi