Earth looked much different not just millions, but even decades and centuries ago. Many animal species that once existed are ...

Across the globe, a small number of animal species are now so rare that only a few individuals remain in the wild. Habitat ...

This year, at least six animal and insect species moved to the Extinct category of the IUCN Red List of Threatened Species Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE ...