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.
Blackish Grass Mouse
Thaptomys nigrita
Gelada
Theropithecus gelada
Anderson's Oldfield Mouse
Thomasomys andersoni
Antonio Brack's Oldfield Mouse
Thomasomys antoniobracki
Apeco Oldfield Mouse
Thomasomys apeco
Golden Oldfield Mouse
Thomasomys aureus
Red Andean Oldfield Mouse
Thomasomys auricularis
Austral Oldfield Mouse
Thomasomys australis
Short-faced Oldfield Mouse
Thomasomys baeops
Silky Oldfield Mouse
Thomasomys bombycinus
Burneo's Oldfield Mouse
Thomasomys burneoi
White-tipped Oldfield Mouse
Thomasomys caudivarius
Ashy-bellied Oldfield Mouse
Thomasomys cinereiventer
Ash-colored Oldfield Mouse
Thomasomys cinereus
Cinnamon-colored Oldfield Mouse
Thomasomys cinnameus
Central Andes Oldfield Mouse
Thomasomys contradictus
Daphne's Oldfield Mouse
Thomasomys daphne
Colombian Oldfield Mouse
Thomasomys dispar
Peruvian Oldfield Mouse
Thomasomys eleusis
Venezuelan Oldfield Mouse
Thomasomys emeritus
Wandering Oldfield Mouse
Thomasomys erro
Smoky Oldfield Mouse
Thomasomys fumeus
Slender Oldfield Mouse
Thomasomys gracilis
Hudson's Oldfield Mouse
Thomasomys hudsoni
Woodland Oldfield Mouse
Thomasomys hylophilus
Igor's Oldfield Mouse
Thomasomys igor
Inca Oldfield Mouse
Thomasomys incanus
Long-tailed Oldfield Mouse
Thomasomys ischyrus
Kalinowski's Oldfield Mouse
Thomasomys kalinowskii
Ladew's Oldfield Mouse
Thomasomys ladewi
Soft-furred Oldfield Mouse
Thomasomys laniger
Piura Oldfield Mouse
Thomasomys lojapiuranus
Large-eared Oldfield Mouse
Thomasomys macrotis
Unicolored Oldfield Mouse
Thomasomys monochromos
Niceforo Maria's Oldfield Mouse
Thomasomys nicefori
Snow-footed Oldfield Mouse
Thomasomys niveipes
Distinguished Oldfield Mouse
Thomasomys notatus
Ashaninka Oldfield Mouse
Thomasomys onkiro
Montane Oldfield Mouse
Thomasomys oreas
Otavalo's Oldfield Mouse
Thomasomys otavalo
Pagaibamba Oldfield Mouse
Thomasomys pagaibambensis
Paramo Oldfield Mouse
Thomasomys paramorum
Pardiñas's Oldfield Mouse
Thomasomys pardignasi
Popayan Oldfield Mouse
Thomasomys popayanus
Cajamarca Oldfield Mouse
Thomasomys praetor
Principal Oldfield Mouse
Thomasomys princeps
Reddish-backed Oldfield Mouse
Thomasomys pyrrhonotus
Reddish-nosed Oldfield Mouse
Thomasomys rosalinda
Salazar's Oldfield Mouse
Thomasomys salazari
Shallqa Oldfield Mouse
Thomasomys shallqukucha
Forest Oldfield Mouse
Thomasomys silvestris
Taczanowski's Oldfield Mouse
Thomasomys taczanowskii
Ucucha Oldfield Mouse
Thomasomys ucucha
Dressy Oldfield Mouse
Thomasomys vestitus
Pichincha Oldfield Mouse
Thomasomys vulcani
Wyoming Pocket Gopher
Thomomys clusius
Idaho Pocket Gopher
Thomomys idahoensis
Western Pocket Gopher
Thomomys mazama
Mountain Pocket Gopher
Thomomys monticolus
Northern Pocket Gopher
Thomomys talpoides