As of January 2020, the International Union for Conservation of Nature (IUCN) listed 203 critically endangered mammalian species, including 31 which are tagged as possibly extinct. Of all evaluated mammalian species, 3.5% are listed as critically endangered. The IUCN also lists 60 mammalian subspecies as critically endangered. Of the subpopulations of mammals evaluated by the IUCN, 18 species subpopulations have been assessed as critically endangered. Additionally 900 mammalian species (15% of those evaluated) are listed as

data deficient A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessaril ...

, meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. While the category of data deficient indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed". This is a complete list of critically endangered mammalian species and subspecies evaluated by the IUCN. Species considered possibly extinct by the IUCN are marked as such. Species and subspecies which have critically endangered subpopulations (or stocks) are indicated. Where possible common names for taxa are given while links point to the scientific name used by the IUCN.

Primates

There are 63 species and 37 subspecies of

primates Primates are a diverse order of mammals. They are divided into the strepsirrhines, which include the lemurs, galagos, and lorisids, and the haplorhines, which include the tarsiers and the simians (monkeys and apes, the latter including huma ...

assessed as critically endangered.

Gibbons Gibbons may refer to: * The plural of gibbon, an ape in the family Hylobatidae * Gibbons (surname) * Gibbons, Alberta * Gibbons (automobile), a British light car of the 1920s * Gibbons P.C., a leading American law firm headquartered in New Jersey ...

Species

Great apes

Species Subspecies

Lemurs Lemurs ( ) (from Latin ''lemures'' – ghosts or spirits) are wet-nosed primates of the superfamily Lemuroidea (), divided into 8 families and consisting of 15 genera and around 100 existing species. They are endemic to the island of Madagasc ...

Species Subspecies

Tarsiers

Species *

Siau Island tarsier The Siau Island tarsier (''Tarsius tumpara'') is a species of tarsier from the tiny volcanic island of Siau Island, Siau in Indonesia. The ''T. tumpara'' species is one of 14 species and 7 subspecies in the tarsier family called "Tarsiidae". They ...

Subspecies * Natuna Islands tarsier

Old World monkeys

Species Subspecies

New World monkeys

Species Subspecies

Lorisoidea

Javan slow loris The Javan slow loris (''Nycticebus javanicus'') is a strepsirrhine primate and a species of slow loris native to the western and central portions of the island of Java, in Indonesia. Although originally described as a separate species, it was co ...

Odd-toed ungulates

Species

Diceros bicornis - profile - Etosha 2014

Subspecies

Cetartiodactyls

Cetartiodactyla includes dolphins, whales and even-toed ungulates. There are 15 species, nine subspecies, and nine subpopulations of cetartiodactyl assessed as critically endangered.

Non-cetacean even-toed ungulates

Giraffa camelopardalis antiquorum (Vincennes Zoo) 2

Species Subspecies

Cetaceans Cetacea (; , ) is an infraorder of aquatic mammals that includes whales, dolphins, and porpoises. Key characteristics are their fully aquatic lifestyle, streamlined body shape, often large size and exclusively carnivorous diet. They propel them ...

Species *

Baiji The baiji (; IPA: ; ''Lipotes vexillifer'', ''Lipotes'' meaning "left behind" and ''vexillifer'' "flag bearer") is a possibly extinct species of freshwater dolphin native to the Yangtze river system in China. It is thought to be the first dolph ...

(possibly extinct) * Vaquita *

Rice's whale Rice's whale (''Balaenoptera ricei''), also known as the Gulf of Mexico whale, is a species of baleen whale endemic to the northern Gulf of Mexico. Initially identified as a Population ecology, subpopulation of the Bryde's whale, genetics, genet ...

* North Atlantic right whale *

Atlantic humpback dolphin The Atlantic humpback dolphin (''Sousa teuszii'') is a species of humpback dolphin that is found in coastal areas of West Africa. It is regarded as critically endangered by the International Union for Conservation of Nature, IUCN. Description A ...

Subspecies Subpopulations

Marsupials

Carnivora

Species Subspecies Subpopulations

Eulipotyphla

Lagomorpha

Rodents

There are 58 species and one subspecies of rodent assessed as critically endangered.

Hystricomorpha

Myomorpha The suborder Myomorpha contains 1,524 species of mouse-like rodents, nearly a quarter of all mammal species. Included are mice, rats, gerbils, hamsters, lemmings, and voles. They are grouped according to the structure of their jaws and molar ...

There are 37 species in Myomorpha assessed as critically endangered. Zyzomys pedunculatus

Murids

Cricetids

Nesomyids

Mount Kahuzi climbing mouse The Mount Kahuzi climbing mouse (''Dendromus kahuziensis'') is a rodent found only in the Democratic Republic of the Congo. It is listed as a critically endangered species due to illegal logging; it is also threatened by fire. Only two specimens ...

Castorimorpha

Species Subspecies *

Alcorn's pocket gopher Alcorn's pocket gopher (''Pappogeomys bulleri alcorni'') is a subspecies of rodent in the family Geomyidae. It is endemic to Mexico. Its natural habitat In ecology, the term habitat summarises the array of resources, physical and biotic ...

Sciuromorpha Sciuromorpha ("squirrel-like") is a rodent clade that includes several different rodent families. It includes all members of the Sciuridae (the squirrel family) as well as the mountain beaver species. Traditionally, the term has been defined on ...

Namdapha flying squirrel The Namdapha flying squirrel (''Biswamoyopterus biswasi'') is an arboreal, nocturnal flying squirrel endemic to Arunachal Pradesh in northeast India, where it is known from a single specimen collected in Namdapha National Park in 1981. No po ...

* Vancouver Island marmot

Bats

Other mammals

Species Subspecies * Sumatran elephant Subpopulations *

Juliana's golden mole Juliana's golden mole (''Neamblysomus julianae'') is a golden mole endemic to South Africa. It is listed as an endangered species due to habitat loss and a restricted range. Golden moles are an ancient group of mammals that live mostly below gro ...

(1 subpopulation)

References

* *Mammals Critically endangered mammals Critically endangered mammals Mammal conservation {{bots, deny=BG19bot,Yobot

Primates

Gibbons Gibbons may refer to: * The plural of gibbon, an ape in the family Hylobatidae * Gibbons (surname) * Gibbons, Alberta * Gibbons (automobile), a British light car of the 1920s * Gibbons P.C., a leading American law firm headquartered in New Jersey ...

Lemurs Lemurs ( ) (from Latin ''lemures'' – ghosts or spirits) are wet-nosed primates of the superfamily Lemuroidea (), divided into 8 families and consisting of 15 genera and around 100 existing species. They are endemic to the island of Madagasc ...

Odd-toed ungulates

Cetartiodactyls

Cetaceans Cetacea (; , ) is an infraorder of aquatic mammals that includes whales, dolphins, and porpoises. Key characteristics are their fully aquatic lifestyle, streamlined body shape, often large size and exclusively carnivorous diet. They propel them ...

Marsupials

Carnivora

Eulipotyphla

Lagomorpha

Rodents

Myomorpha The suborder Myomorpha contains 1,524 species of mouse-like rodents, nearly a quarter of all mammal species. Included are mice, rats, gerbils, hamsters, lemmings, and voles. They are grouped according to the structure of their jaws and molar ...

Sciuromorpha Sciuromorpha ("squirrel-like") is a rodent clade that includes several different rodent families. It includes all members of the Sciuridae (the squirrel family) as well as the mountain beaver species. Traditionally, the term has been defined on ...

Bats

Other mammals

See also

References