Mammals 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.

African Shaggy Rat
Dasymys incomtus
Mount Cameroon Shaggy Rat
Dasymys longipilosus
Middle Shaggy Rat
Dasymys medius
Rwenzori Shaggy Rat
Dasymys montanus
Angolan Shaggy Rat
Dasymys nudipes
Roberts's Shaggy Rat
Dasymys robertsii

West African Shaggy Rat
Dasymys rufulus
Rwandan Shaggy Rat
Dasymys rwandae
Tanzanian Shaggy Rat
Dasymys sua

Azara's Agouti
Dasyprocta azarae
Coiban Agouti
Dasyprocta coibae
Orange Agouti
Dasyprocta croconota

Black Agouti
Dasyprocta fuliginosa
Guamara Agouti
Dasyprocta guamara

Iack's Red-rumped Agouti
Dasyprocta iacki
Kalinowski's Agouti
Dasyprocta kalinowskii

Common Red-rumped Agouti
Dasyprocta leporina

Mexican Agouti
Dasyprocta mexicana

Black-rumped Agouti
Dasyprocta prymnolopha

Central American Agouti
Dasyprocta punctata
Roatan Island Agouti
Dasyprocta ruatanica

Brown Agouti
Dasyprocta variegata
Eastern Greater Long-nosed Armadillo
Dasypus beniensis
Western Andean Long-nosed Armadillo
Dasypus fenestratus
Guianan Long-nosed Armadillo
Dasypus guianensis
Guianan Greater Long-nosed Armadillo
Dasypus kappleri
Yungas Long-nosed Armadillo
Dasypus mazzai
Mexican Long-nosed Armadillo
Dasypus mexicanus

Southern Long-nosed Armadillo
Dasypus novemcinctus
Western Greater Long-nosed Armadillo
Dasypus pastasae
Hairy Long-nosed Armadillo
Dasypus pilosus
Llanos Long-nosed Armadillo
Dasypus sabanicola

Seven-banded Long-nosed Armadillo
Dasypus septemcinctus

Kowari
Dasyuroides byrnei

New Guinea Quoll
Dasyurus albopunctatus
Western Quoll
Dasyurus geoffroii

Northern Quoll
Dasyurus hallucatus

Spotted-tailed Quoll
Dasyurus maculatus
Bronze Quoll
Dasyurus spartacus

Eastern Quoll
Dasyurus viverrinus

Aye-aye
Daubentonia madagascariensis
Delany's Swamp Mouse
Delanymys brooksi
Montane Atlantic Forest Rat
Delomys altimontanus

Striped Atlantic Forest Rat
Delomys dorsalis
Pallid Atlantic Forest Rat
Delomys sublineatus

Beluga
Delphinapterus leucas

Eastern Pacific Long-beaked Common Dolphin
Delphinus bairdii

Panglobal Common Dolphin
Delphinus delphis
Araucaria Grass Mouse
Deltamys araucaria

Kemp's Grass Mouse
Deltamys kempi
Bornean Smooth-tailed Treeshrew
Dendrogale melanura

Northern Smooth-tailed Treeshrew
Dendrogale murina
Southern Tree Hyrax
Dendrohyrax arboreus

Western Tree Hyrax
Dendrohyrax dorsalis
Benin Tree Hyrax
Dendrohyrax interfluvialis

Eastern Tree Hyrax
Dendrohyrax validus

Bennett's Tree Kangaroo
Dendrolagus bennettianus

Doria's Tree Kangaroo
Dendrolagus dorianus

Goodfellow's Tree Kangaroo
Dendrolagus goodfellowi

Grizzled Tree Kangaroo
Dendrolagus inustus