The Status of Nepal's Mammals: The National Red List Series - IUCN

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Appendix III
The 2001 IUCN Categories - Definitions
EX EXTINCT. A species is assessed as Extinct when there is no reasonable doubt that the last individual
has died.
EW EXTINCT IN THE WILD. This applies to species which only occur in captivity or as naturalised
populations.
RE REGIONALLY EXTINCT. A species is considered Regionally Extinct when it has disappeared from
a nation or region and there is no doubt that the last individual has died there. However, such
species may occur in other parts of the world.
THREATENED
CR CRITICALLY ENDANGERED. Species are that are Critically Endangered face an extremely
high risk of extinction and fulfil the criteria A-E for Critically Endangered.
EN ENDANGERED. Endangered species face a high risk of extinction and fulfil criteria A-E for
Endangered.
VU VULNERABLE. Species considered Vulnerable face a high risk of extinction and fulfil criteria
A-E for a Vulnerable species.
NT NEAR THREATENED. This category applies to species that do not currently qualify for a threatened
category but is close to qualifying and is likely to qualify in the near future.
LC LEAST CONCERN. Least Concern species are usually common and face no serious threats. Species in
this category do not qualify for a threat category and face little or no threat of extinction.
DD DATA DEFICIENT. A species is Data Deficient when there is not sufficient available information to
assess the species against the criteria.