The IUCN Red List of Threatened Species™ is the world’s most comprehensive information source on the global extinction risk status of animal, fungus and plant species. Open to all, it is used by governmental bodies, non-profit organisations, businesses and individuals.
IUCN promotes strategies that integrate the sustainable management of land, water and biodiversity with human health and well-being. We provide tools like The IUCN Red List of Threatened Species, IUCN Red List of Ecosystems and the Integrated Biodiversity Assessment Tool to inform conservation projects, business, national and international policy.
Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species.
The IUCN Red List of Threatened Species is made possible through the active participation of the Red List Partners and their respective networks. As a result, the IUCN Red List represents an enormous investment of time, expertise and financial resources by a large number of individuals and organizations. IUCN gratefully acknowledges the contributions, dedication and commitment from its ...
SUMMARY OF THE FIVE CRITERIA (A-E) USED TO EVALUATE IF A TAXON BELONGS IN AN IUCN RED LIST THREATENED CATEGORY (CRITICALLY ENDANGERED, ENDANGERED OR VULNERABLE).
Table 2: Changes in numbers of species in the threatened categories (CR, EN, VU) from 1996 to 2025 (IUCN Red List version 2025-1) for the major taxonomic groups on the Red List Changes in number of threatened species from year to year should not be directly interpreted as trends in the status of biodiversity. The figures displayed below reflect increased assessment efforts by IUCN and its ...