Number of species threatened with extinction

The IUCN Red List has assessed the extinction risk of only a small share of the total known species in the world. This means the number of species threatened withextinction is likely to be a significant underestimate of the total number of species at risk.

Source: IUCN Red List (2022)

Note: 'Threatened' species are those that are categorized as 'Critically endangered', 'Endangered' or 'Vulnerable' on the IUCN Red List.