How does a species get listed as Endangered?

A species is listed as endangered when it is assessed and determined to be at risk of extinction based on criteria set by conservation authorities, such as the International Union for Conservation of Nature (IUCN) or national agencies like the U.S. Fish and Wildlife Service. Factors considered include population size, habitat loss, threats from human activity, and ecological dynamics. The species is usually evaluated through comprehensive studies and monitoring, which help inform the decision-making process for its protection. Once listed, the species gains legal protections aimed at conservation and recovery efforts.