Critically endangered species

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Conservation status
the risk of extinction
Extinction
Extinct Extinct in the Wild
Threatened
Critically Endangered Endangered Vulnerable Threatened
Lower risk
Conservation Dependent Near Threatened Least Concern Domesticated
See also
World Conservation Union IUCN Red List

Organisms with a conservation status of critically endangered have an extremely high risk of becoming extinct.

IUCN Category

The Critically Endangered status, in relation to other IUCN Red List categories

The World Conservation Union (IUCN), widely considered to be the most objective and authoritative system for classifying species in terms of the risk of extinction^[1], lists 3071 species (1528 animals, 1541 plants, 2 fungi) of the world as being critically endangered in their 2006 Red List. Additionally 254 subspecies or varieties are considered critically endangered, and 30 subpopulations or stocks have been assessed with a critical risk of (local) extinction.

Critically endangered is the highest risk category assigned by the IUCN for wild species. Critically endangered means that a species numbers have decreased, or will decrease, by 80% within three generations.^[2]

As the IUCN does not consider a species extinct until extensive, targeted surveys have been conducted, species which are possibly extinct are still listed as "Critically Endangered". A new category for "Possibly Extinct" has been suggested by BirdLife International to categorize these taxa.

Mammalia

Pilosa

Pygmy Three-toed Sloth (Bradypus pygmaeus)

Odd-toed ungulates

African wild ass (Equus africanus)
Black rhinoceros (Diceros bicornis)
Javan rhinoceros (Rhinoceros sondaicus)
Sumatran rhinoceros (Dicerorhinus sumatrensis)

Even-toed ungulates

Giant Sable Antelope (Hippotragus niger varani)
Pygmy hog (Sus salvanius)
Visayan warty pig (Sus cebifrons)
Bactrian camel (Camelus bactrianus)
Pere David's deer (Elaphurus davidianus)
Addax (Addax nasomaculatus)
Aders' Duiker (Cephalophus adersi)
Kouprey (Bos sauveli)
Tamaraw or Tamarou (Bubalus mindorensis)
Hirola (Damaliscus hunteri)
Walia Ibex or Ethiopian ibex (Capra walie)
Dama Gazelle (Gazella dama)
Przewalski's Gazelle (Procapra przewalskii)
Saola (Pseudoryx nghetinhensis)
Saiga Antelope (Saiga tatarica)
Sierra Nevada Bighorn Sheep (Ovis canadensis sierrae)
Wisent or European Bison (Bison Bonasus)

Cetacea

Vaquita (Phocoena sinus)
Baiji (Lepotes Vexillifer)

Carnivores

Arabian Wolf (Canis lupus arabs)
Asiatic Lion (Panthera leo persica)
Asiatic Cheetah (Acinonyx jubatus venaticus)
Amur Leopard (Panthera pardus occidentalis)
Amur tiger or Siberian tiger (Panthera tigris altaica)
Anatolian leopard (Panthera pardus tulliana) (Possibly extinct: last sighted 2004)
Florida panther (Puma concolor coryi)
Red wolf (Canis rufus)
Mexican wolf (Canis lupus baileyi)
Island fox (Urocyon littoralis)
Darwin's zorro (Pseudalopex fulvipes)
Malabar civet (Viverra civettina)
Iberian lynx (Lynx pardinus)
Sumatran Tiger (Panthera tigris sumatrae)
Arabian leopard (Panthera pardus nimr)
Caspian Sea Wolf (Canis lupus cubanensis)
Andean Wolf (Dasycyon hagenbecki)
Himalayan Wolf (Canis himalayanensis)
Cascade Mountain Wolf (Canis lupus fuscus)
Egyptian Wolf (Canis lupus lupastor)
Zanzibar Leopard (Panthera pardus adersi)