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.
Philippine Slow Loris
Nycticebus menagensis
Schlieffen's Serotine
Nycticeinops schlieffenii
Temminck's Mysterious Bat
Nycticeius aenobarbus
Cuban Evening Bat
Nycticeius cubanus
North American Evening Bat
Nycticeius humeralis
Gervais's Funnel-eared Bat
Nyctiellus lepidus
Broad-striped Tube-nosed Fruit Bat
Nyctimene aello
Common Tube-nosed Fruit Bat
Nyctimene albiventris
Pallas's Tube-nosed Fruit Bat
Nyctimene cephalotes
Mountain Tube-nosed Fruit Bat
Nyctimene certans
Round-eared Tube-nosed Fruit Bat
Nyctimene cyclotis
Dragon Tube-nosed Fruit Bat
Nyctimene draconilla
Keast's Tube-nosed Fruit Bat
Nyctimene keasti
Island Tube-nosed Fruit Bat
Nyctimene major
Malaita Tube-nosed Fruit Bat
Nyctimene malaitensis
Demonic Tube-nosed Fruit Bat
Nyctimene masalai
Philippine Tube-nosed Fruit Bat
Nyctimene rabori
Queensland Tube-nosed Fruit Bat
Nyctimene robinsoni
Nendö Tube-nosed Fruit Bat
Nyctimene sanctacrucis
Lesser Tube-nosed Fruit Bat
Nyctimene varia
Umboi Tube-nosed Fruit Bat
Nyctimene vizcaccia
Happy Tube-nosed Fruit Bat
Nyctimene wrightae
Peale's Free-tailed Bat
Nyctinomops aurispinosus
Pocketed Free-tailed Bat
Nyctinomops femorosaccus
Broad-eared Free-tailed Bat
Nyctinomops laticaudatus
Big Free-tailed Bat
Nyctinomops macrotis
Guaraní Free-tailed Bat
Nyctinomops mbopicuare
Egyptian Free-tailed Bat
Nyctinomus aegyptiacus
Sumichrast's Vesper Rat
Nyctomys sumichrasti
Northern Long-eared Bat
Nyctophilus arnhemensis
Eastern Long-eared Bat
Nyctophilus bifax
Corben's Long-eared Bat
Nyctophilus corbeni
Pallid Long-eared Bat
Nyctophilus daedalus
Lesser Long-eared Bat
Nyctophilus geoffroyi
Gould's Long-eared Bat
Nyctophilus gouldi
Sunda Long-eared Bat
Nyctophilus heran
Holts' Long-eared Bat
Nyctophilus holtorum
Lord Howe Long-eared Bat
Nyctophilus howensis
Western Long-eared Bat
Nyctophilus major
Small-toothed Long-eared Bat
Nyctophilus microdon
Papuan Long-eared Bat
Nyctophilus microtis
New Caledonian Long-eared Bat
Nyctophilus nebulosus
Tasmanian Long-eared Bat
Nyctophilus sherrini
Mount Missim Long-eared Bat
Nyctophilus shirleyae
Timor Long-eared Bat
Nyctophilus timoriensis
Pygmy Long-eared Bat
Nyctophilus walkeri
Alpine Pika
Ochotona alpina
Silver Pika
Ochotona argentata
Gansu Pika
Ochotona cansus
Collared Pika
Ochotona collaris
Korean Pika
Ochotona coreana
Plateau Pika
Ochotona curzoniae
Daurian Pika
Ochotona dauurica
Chinese Red Pika
Ochotona erythrotis
Flat-headed Pika
Ochotona flatcalvariam
Forrest's Pika
Ochotona forresti
Galungla Mountain Pika
Ochotona galunglaensis
Hoffmann's Pika
Ochotona hoffmanni
Yellow Pika
Ochotona huanglongensis
Northern Pika
Ochotona hyperborea