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.
Insular Cave Rat
Heteropsomys insulans
Imposter Hutia
Hexolobodon phenax
Northern Huemul
Hippocamelus antisensis
Southern Huemul
Hippocamelus bisulcus
Common Hippopotamus
Hippopotamus amphibius
Lemerle's Dwarf Hippopotamus
Hippopotamus lemerlei
Madagascan Dwarf Hippopotamus
Hippopotamus madagascariensis
Aba Roundleaf Bat
Hipposideros abae
Ha Long Roundleaf Bat
Hipposideros alongensis
Philippine Dusky Roundleaf Bat
Hipposideros antricola
Great Himalayan Roundleaf Bat
Hipposideros armiger
Common Dusky Roundleaf Bat
Hipposideros ater
Benito Roundleaf Bat
Hipposideros beatus
Bicolored Roundleaf Bat
Hipposideros bicolor
Boeadi's Roundleaf Bat
Hipposideros boeadii
Dobson's Roundleaf Bat
Hipposideros brachyotus
Short-headed Roundleaf Bat
Hipposideros breviceps
Sundevall's Roundleaf Bat
Hipposideros caffer
Spurred Roundleaf Bat
Hipposideros calcaratus
Fawn-colored Roundleaf Bat
Hipposideros cervinus
Least Roundleaf Bat
Hipposideros cineraceus
Large Mindanao Roundleaf Bat
Hipposideros coronatus
Telefomin Roundleaf Bat
Hipposideros corynophyllus
Cox's Roundleaf Bat
Hipposideros coxi
Timor Roundleaf Bat
Hipposideros crumeniferus
Short-tailed Roundleaf Bat
Hipposideros curtus
Makira Roundleaf Bat
Hipposideros demissus
Diadem Roundleaf Bat
Hipposideros diadema
Fierce Roundleaf Bat
Hipposideros dinops
Bornean Roundleaf Bat
Hipposideros doriae
Durga Das's Roundleaf Bat
Hipposideros durgadasi
Dayak Roundleaf Bat
Hipposideros dyacorum
Hill's Roundleaf Bat
Hipposideros edwardshilli
House-dwelling Roundleaf Bat
Hipposideros einnaythu
Sooty Roundleaf Bat
Hipposideros fuliginosus
Fulvus Roundleaf Bat
Hipposideros fulvus
Cantor's Roundleaf Bat
Hipposideros galeritus
Andersen's Roundleaf Bat
Hipposideros gentilis
Grand Roundleaf Bat
Hipposideros grandis
Griffin's Roundleaf Bat
Hipposideros griffini
Thailand Roundleaf Bat
Hipposideros halophyllus
Kolar Roundleaf Bat
Hipposideros hypophyllus
Crested Roundleaf Bat
Hipposideros inexpectatus
Arnhem Roundleaf Bat
Hipposideros inornatus
Jones's Roundleaf Bat
Hipposideros jonesi
Phou Khao Khouay Roundleaf Bat
Hipposideros khaokhouayensis
Kingston's Roundleaf Bat
Hipposideros kingstonae
Kunz's Roundleaf Bat
Hipposideros kunzi
Lamotte's Roundleaf Bat
Hipposideros lamottei
Indian Roundleaf Bat
Hipposideros lankadiva
Horsfield's Roundleaf Bat
Hipposideros larvatus
Large Asian Roundleaf Bat
Hipposideros lekaguli
Shield-faced Roundleaf Bat
Hipposideros lylei
Big-eared Roundleaf Bat
Hipposideros macrobullatus
Maduran Roundleaf Bat
Hipposideros madurae
Maggie Taylor's Roundleaf Bat
Hipposideros maggietaylorae
Aellen's Roundleaf Bat
Hipposideros marisae
Large-eared Roundleaf Bat
Hipposideros megalotis
Fly River Roundleaf Bat
Hipposideros muscinus
Malayan Roundleaf Bat
Hipposideros nequam