The IUCN Red List of Threatened Species assesses the conservation status of species, subspecies, varieties and even selected sub-populations on a global scale.
This system is designed to determine the relative risk of extinction, and the main purpose of the IUCN Red List is to catalogue and highlight those species that are facing a higher risk of global extinction (i.e. those listed as Critically Endangered, Endangered and Vulnerable).
The IUCN Red List also includes information on species that are categorized as Extinct or Extinct in the Wild.
Source: based on The IUCN Red List of Threatened Species
Introduction
Español: Lista Roja UICN
Français: Liste rouge UICN
Nederlands: IUCN Rode Lijst