Which federal agency determines what species are endangered?

The Fish and Wildlife Service (FWS) is the federal agency responsible for determining which species are considered endangered under the Endangered Species Act. This agency conducts thorough assessments of wildlife populations, evaluates their conservation status, and determines the necessary protection measures for at-risk species. The FWS plays a critical role in conserving species and their habitats, ensuring the survival of those that are endangered or threatened.

While the Environmental Protection Agency focuses on environmental protection and regulation of pollutants, and the National Oceanic and Atmospheric Administration deals primarily with oceanic and atmospheric sciences, including marine species, neither of these agencies has the primary role in listing endangered species. The U.S. Forest Service is concerned with the management of national forests and grasslands but also does not have the authority to designate endangered species. Thus, the FWS is the designated authority on this important ecological matter.