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.
Orange-sided Opossum
Monodelphis dimidiata
Gray Short-tailed Opossum
Monodelphis domestica
Emilie's Short-tailed Opossum
Monodelphis emiliae
Gardner's Short-tailed Opossum
Monodelphis gardneri
Amazonian Red-sided Opossum
Monodelphis glirina
Handley's Short-tailed Opossum
Monodelphis handleyi
Ihering's Three-striped Opossum
Monodelphis iheringi
Pygmy Short-tailed Opossum
Monodelphis kunsi
Osgood's Short-tailed Opossum
Monodelphis osgoodi
Hooded Red-sided Opossum
Monodelphis palliolata
Peruvian Short-tailed Opossum
Monodelphis peruviana
Long-nosed Short-tailed Opossum
Monodelphis pinocchio
Reig's Opossum
Monodelphis reigi
Pine's Opossum
Monodelphis ronaldi
Saci Short-tailed Opossum
Monodelphis saci
Santa Rosa Short-tailed Opossum
Monodelphis sanctaerosae
Tawny-headed Opossum
Monodelphis scalops
Touan Short-tailed Opossum
Monodelphis touan
Single-striped Opossum
Monodelphis unistriata
Voss's Short-tailed Opossum
Monodelphis vossi
Narwhal
Monodon monoceros
Eastern Antillean Single-leaf Bat
Monophyllus plethodon
Western Antillean Single-leaf Bat
Monophyllus redmani
Delicate Montane Mouse
Montemys delectorum
Koopman's Forest Mouse
Monticolomys koopmani
Duke of Abruzzi's Free-tailed Bat
Mops aloysiisabaudiae
Ansorge's Free-tailed Bat
Mops ansorgei
Madagascar Free-tailed Bat
Mops atsinanana
Bakari's Free-tailed Bat
Mops bakarii
Gland-tailed Free-tailed Bat
Mops bemmeleni
Spotted Free-tailed Bat
Mops bivittatus
Short-winged Free-tailed Bat
Mops brachypterus
Fijian Free-tailed Bat
Mops bregullae
Long-crested Free-tailed Bat
Mops chapini
Angolan Free-tailed Bat
Mops condylurus
Congo Free-tailed Bat
Mops congicus
Mongalla Free-tailed Bat
Mops demonstrator
Gallagher's Free-tailed Bat
Mops gallagheri
Greater Northern Free-tailed Bat
Mops jobensis
Black-and-red Free-tailed Bat
Mops jobimena
Lesser Northern Free-tailed Bat
Mops johorensis
Grandidier's Free-tailed Bat
Mops leucogaster
Malagasy White-bellied Free-tailed Bat
Mops leucostigma
Lappet-eared Free-tailed Bat
Mops major
Midas Free-tailed Bat
Mops midas
Malayan Free-tailed Bat
Mops mops
Dwarf Free-tailed Bat
Mops nanulus
Niangara Free-tailed Bat
Mops niangarae
Nigerian Free-tailed Bat
Mops nigeriae
White-bellied Free-tailed Bat
Mops niveiventer
Peterson's Free-tailed Bat
Mops petersoni
Wrinkle-lipped Free-tailed Bat
Mops plicatus
Little Free-tailed Bat
Mops pumilus
Seychelles Free-tailed Bat
Mops pusillus
Russet Free-tailed Bat
Mops russatus
Sulawesian Free-tailed Bat
Mops sarasinorum
Solomons Free-tailed Bat
Mops solomonis
Spurrell's Free-tailed Bat
Mops spurrelli
Railer Free-tailed Bat
Mops thersites
Sao Tome Free-tailed Bat
Mops tomensis