An endangered species is defined by the U.S. Fish & Wildlife Service as "an animal or plant species in danger of extinction throughout all or a significant portion of its range." In the United States, these animals can be listed under and protected by the Endangered Species Act. Endangered Species in the United States include the black-footed ferret and the California red-legged frog. The International Union for Conservation of Nature also keeps a Red List of Threatened Species, the most widely recognized list of endangered and threatened species. On this list, for example, are all the surviving subspecies of tiger, which range from endangered to critically endangered.
A tenfold increase in protected coral species was announced Wednesday, with 20 new corals added to the threatened species list.
Renowned scientist and conservationist Patricia Wright battles to save one of the world’s most endangered primates.
Summer speed limits could reduce roadkill deaths for the rare Hine's emerald dragonfly, an endangered species.
China welcomed the birth of the world's first known surviving panda triplets, a rare event for the endangered, bamboo-loving bears.
A Chinese zoo shared photos of a rare trio of giant panda cubs. The pictures show the triplets resting in an incubator while their mother recovers from the birth.
South Africa will evacuate hundreds of rhinos to reduce the impact of poaching on the population, according to a government minister.
Conservationists warn that all eight species of pangolins, or scaly anteaters, may be eaten to extinction if illegal hunting and poaching continues.
Researchers have tagged more than 100 blue whales off the California Coast, finding the behemoths feed around major shipping lanes.
A river teeming with spawning salmon lures grizzly bears from hundreds of miles away, new research suggests.
The Indus River dolphin range has declined dramatically as a result of dams that have fragmented their native habitat, new research finds.
This summer, Hawaii's endangered wildlife will be on candid camera, as two kinds of drones survey the numbers and whereabouts of animals in their natural habitats.
After returning to the lower Colorado River in 2012 after a 22-year absence, the endangered razorback sucker fish is now spawning in Grand Canyon National Park.
Bison went extinct in Europe nearly 100 years ago, but conservationists are taking small steps to bring the animals back into the wild.