As of the most recent data from 2025, approximately 9,760 species are listed as Critically Endangered on the IUCN Red List
. Other sources indicate that nearly 4,000 species are classified as Critically Endangered, reflecting some variation depending on the scope and timing of assessments
. The IUCN Red List currently includes over 166,000 species assessed, with more than 46,000 threatened with extinction across various categories including Critically Endangered
. In summary:
- About 9,760 species are officially recognized as Critically Endangered by the IUCN as of late 2023/early 2024
- Nearly 4,000 species are sometimes cited as critically endangered in recent reports, possibly reflecting different subsets or updates
- The total number of species assessed by IUCN is over 166,000, with more than 46,000 threatened overall
The Critically Endangered category represents species facing an extremely high risk of extinction in the wild, based on strict criteria involving population decline, geographic range, and other factors
