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.
Ili Pika
Ochotona iliensis
Kozlov's Pika
Ochotona koslowi
Ladak Pika
Ochotona ladacensis
Legbo Valley Pika
Ochotona legbona
Large-eared Pika
Ochotona macrotis
Manchurian Pika
Ochotona mantchurica
Nubra Pika
Ochotona nubrica
Kazakh Pika
Ochotona opaca
Pallas's Pika
Ochotona pallasii
American Pika
Ochotona princeps
Steppe Pika
Ochotona pusilla
Qionglai Pika
Ochotona qionglaiensis
Royle's Pika
Ochotona roylii
Afghan Pika
Ochotona rufescens
Turkestan Red Pika
Ochotona rutila
Sacred Pika
Ochotona sacraria
Sijin Pika
Ochotona sikimaria
Tsing-ling Pika
Ochotona syrinx
Moupin Pika
Ochotona thibetana
Thomas's Pika
Ochotona thomasi
Turuchan Pika
Ochotona turuchanensis
Iranian Pika
Ochotona vizier
Brockman's White-bellied Rocky Mouse
Ochromyscus brockmani
Snowy White-bellied Rocky Mouse
Ochromyscus niveiventris
Yemen White-bellied Rocky Mouse
Ochromyscus yemeni
Golden Mouse
Ochrotomys nuttalli
Bridges's Degu
Octodon bridgesii
Common Degu
Octodon degus
Coastal Degu
Octodon lunatus
Pacific Degu
Octodon pacificus
Ricardo Ojeda's Degu
Octodon ricardojeda
Mountain Degu
Octodontomys gliroides
Common Viscacha Rat
Octomys mimax
Rosi's Viscacha Rat
Octomys rosiae
Walrus
Odobenus rosmarus
Mule Deer
Odocoileus hemionus
Yucatan Brown Brocket
Odocoileus pandora
White-tailed Deer
Odocoileus virginianus
Guianan Arboreal Rice Rat
Oecomys auyantepui
White-bellied Arboreal Rice Rat
Oecomys bicolor
Atlantic Forest Arboreal Rice Rat
Oecomys catherinae
Cleber's Arboreal Rice Rat
Oecomys cleberi
Unicolored Arboreal Rice Rat
Oecomys concolor
Yellow Arboreal Rice Rat
Oecomys flavicans
Franciscos' Arboreal Rice Rat
Oecomys franciscorum
Río Gálvez Arboreal Rice Rat
Oecomys galvez
Hice's Arboreal Rice Rat
Oecomys hiceae
Jamari Arboreal Rice Rat
Oecomys jamari
Matses Arboreal Rice Rat
Oecomys makampi
Mamore Arboreal Rice Rat
Oecomys mamorae
Mato Grosso Arboreal Rice Rat
Oecomys matogrossensis
Dwarf Arboreal Rice Rat
Oecomys nanus
Brazilian Arboreal Rice Rat
Oecomys paricola
Dusky Arboreal Rice Rat
Oecomys phaeotis
King Arboreal Rice Rat
Oecomys rex
Robert's Arboreal Rice Rat
Oecomys roberti
Red Arboreal Rice Rat
Oecomys rutilus
Savanna Arboreal Rice Rat
Oecomys speciosus
Foothill Arboreal Rice Rat
Oecomys superans
Anderson's Arboreal Rice Rat
Oecomys sydandersoni