The ICUN has many ranks that define an animal's population and risk of extinction. Species are classified into one of nine Red List Categories: Extinct, Extinct in the Wild, Critically Endangered, Endangered, Vulnerable, Near Threatened, Least Concern, Data Deficient, and Not Evaluated. They formerly used a identification called "lower risk" to describe some animals.
The ICUN defines an animal with the conservation status of lower risk is one with populations levels high enough to ensure its survival. Animals with this status do not qualify as being threatened or extinct. However, natural disasters or certain human activities would cause them to change to either of these classifications.
When it was in use, this classification was sub-divided into three types:
- Conservation dependent- where cessation of current conservation measures may result in it being classified at a higher risk level.
- Near threatened - may become vulnerable to endangermentin the near future but not meeting the criteria.
- Least concern- where neither of the two above apply.
- "Raw Data to Red List". IUCN Red List of Threatened Species. Archived from the original on June 23, 2023. Retrieved June 23, 2023.
- "IUCN Red List of Threatened Species". www.iucn.org. Retrieved 2023-05-26.
- "lower risk species (IUCN)". www.eionet.europa.eu. Retrieved 2023-05-18.
- "What are the differences between endangered, threatened, imperiled, and at-risk species? | U.S. Geological Survey". www.usgs.gov. Retrieved 2023-04-25.