List of critically endangered mammals


As of January 2020, the International Union for Conservation of Nature lists 203 critically endangered mammalian species, including 31 which are tagged as possibly extinct.1 3.5% of all evaluated mammalian species 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 are listed as data deficient, 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 are indicated. Where possible common names for taxa are given while links point to the scientific name used by the IUCN.

Odd-toed ungulates

Species
in Etosha National Park
Subspecies

Primates

There are 63 species and 37 subspecies of primates assessed as critically endangered.

Gibbons">Hylobatidae">Gibbons

Species

Great apes">Hominidae">Great apes

Species
Subspecies

Lemurs">Lemuroidea">Lemurs

Species
Subspecies

Tarsiers">Tarsiidae">Tarsiers

Species
Subspecies
Species
Subspecies

New World monkeys">Platyrrhini">New World monkeys

Species
Subspecies

[Lorisoidea]

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">Artiodactyla">Non-cetacean even-toed ungulates

Species
Subspecies

Cetaceans">Cetacea">Cetaceans

Species
Subspecies
Subpopulations

Marsupials

Carnivora

Species
Subspecies
Subpopulations

Eulipotyphla

Rodents

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

[Hystricomorpha]

[Myomorpha]

There are 37 species in Myomorpha assessed as critically endangered.

Murids">Muridae">Murids

Cricetids">Cricetidae">Cricetids

Nesomyids">Nesomyidae">Nesomyids

Species
Subspecies

Other mammals

Species
Subspecies
Subpopulations