This 2-foot-long, black-masked member of the weasel family once occurred in central grasslands and basins from southern Canada to Texas but is now one of the most endangered mammals in North America.

The Trump administration on April 16, 2025, issued a proposed rule to rescind nearly all habitat protections for endangered species across the country. The proposal has profound, life-altering ...

Plastic bags start out as fossil fuels and end up as deadly waste in landfills and the ocean. Birds often mistake shredded plastic bags for food, filling their stomachs with toxic debris. For hungry ...

Like polar bears on the opposite pole, emperor penguins endure unfathomable hardships to breed and nurture each new generation — fasting for months through the planet's harshest winter. If their ...

DESCRIPTION: The eastern diamondback is the largest rattlesnake in the world. Adults are typically four to five feet long and weigh four to five pounds. A big snake may reach six feet in length and ...

Each colored area on this map represents a different country's mining claim in the Clario-Clipperton zone. Map courtesy International Seabed Authority.

Despite their dainty appearance, desert kit foxes are hardy animals, well adapted for living in the hot, harsh desert habitat from which they never stray. This cat-sized kit fox subspecies has long, ...

The mountain yellow-legged frog was once the most abundant amphibian in Southern California's Sierra Nevada and Transverse Ranges. Just decades ago, it was hard to walk around many of California's ...

Just as nature inspires art, art inspires actions to defend wild places and the wild creatures that live in them. With this in mind, the Center for Biological Diversity's Endangered Species Mural ...

The variability among living organisms on the earth, including the variability within and between species and within and between ecosystems. Biological diversity, often shortened to biodiversity, is ...

Having collected the most recent census data from state and federal bald-eagle managers in each of the lower 48 states and the District of Columbia, the Center for Biological Diversity has determined ...