WWF is committed to saving endangered species. Learn more about the species we are working to protecting from becoming endangered or extinct.

World Wildlife Fund - The leading organization in wildlife conservation and endangered species. Learn how you can help WWF make a difference.

The Status of Rare, Threatened and Endangered Plants and Animals of CA 2000-2004. Use the CA Natural Diversity Database (CNDDB) for the most current lists.

The IUCN Red List Categories and Criteria are intended to be an easily and widely understood system for classifying species at high risk of global extinction.

A species is classified as endangered when its population has declined between 50 and 70 percent. This decline is measured over 10 years or three generations of ...

Welcome to IFAW's Explore section. Select from the options to learn more about our work with animals, animal welfare, and conservation.

An endangered species is an animal or plant that's considered at risk of extinction. A species can be listed as endangered at the state, federal, and ...

The Endangered Species Coalition's mission is to stop the human-caused extinction of our nation's at-risk species, to protect and restore their habitats, and to ... Protecting the Endangered... · Support the Endangered... · Jobs and Internships

Earth's Endangered Creatures lists endangered plants and animals of the world that are threatened with extinction. List of all endangered animals. · Endangered Mammals of... · Animals and Plants

We provide national leadership in the recovery and conservation of our nation's imperiled plant and animal species. Find a Species · What We Do · Contact Us · Get Involved