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Silky sifaka ( Propithecus candidus ), fewer than 1,000 still alive. The World's 100 most threatened species[ 1] is a compilation of the most threatened animals, plants, and fungi in the world. It was the result of a collaboration between over 8,000 scientists from the International Union for Conservation of Nature Species Survival Commission ...
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs .
Least concern (LC): 3,306 species. Data deficient (DD): 872 species. Mammalian species (IUCN, 2020-1) 5850 extant species have been evaluated. 4978 of those are fully assessed [ a] 3651 are not threatened at present [ b] 1244 to 2116 are threatened [ c] 81 to 83 are extinct or extinct in the wild:
Least chipmunk. Northern pocket gopher. Ord's kangaroo rat. Singing vole. White-footed mouse. Hispid cotton rat. Rodents make up the largest order of mammals, with over 40% of mammalian species. They have two incisors in the upper and lower jaw which grow continually and must be kept short by gnawing.
As of 2022, the International Union for Conservation of Nature (IUCN) listed 40 animal species as extinct in the wild. [1] That is approximately 0.04% of all evaluated animal species. The IUCN also lists five animal subspecies as extinct in the wild. This is a complete list of wild animal species and subspecies listed as extinct by the IUCN.
List of Saint Helena, Ascension and Tristan da Cunha animals extinct in the Holocene. List of Asian animals extinct in the Holocene. List of European species extinct in the Holocene. List of extinct animals of the British Isles. List of North American animals extinct in the Holocene. List of Antillian and Bermudan animals extinct in the Holocene.
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological species. [ 1] A series of Regional Red Lists, which assess the risk of extinction to species within a ...
Endangered (EN) species are considered to be facing a very high risk of extinction in the wild. In September 2016, the International Union for Conservation of Nature (IUCN) listed 474 endangered mammalian species. [1] Of all evaluated mammalian species, 8.6% are listed as endangered. The IUCN also lists 86 mammalian subspecies as endangered.