The elusive and rare Sierra Nevada red fox has been spotted in Yosemite National Park for the first time in nearly a century.
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.
Successfully combating the disease has been difficult, but a group has been exploring some new techniques that control the fungus using naturally occurring soil microbes.
A baby killer whale was born into the endangered J-pod that lives off the coast of Washington state.
The monarch butterfly, once common across the United States, could soon end up on the Endangered Species List.
A coyote hunter in Utah mistakenly shot and killed an endangered gray wolf, which wildlife groups worry was the same wolf photographed near the Grand Canyon this fall.
A salamander tadpole with two seemingly functional heads is born in Israel, and researchers are speculating that environmental pollutants or random mutation may have caused the defect.
The world's most endangered porpoise could go extinct in four or five years if the Mexican government doesn't step up enforcement against illegal fishing.
Illegal gillnet fishing in the Gulf of California is driving the vaquita, a tiny, critically endangered and elusive porpoise, to extinction.
A decade ago, we set out to unravel deep ocean crime scenes we weren’t even sure existed. The crime? Endangered Steller sea lions were rapidly disappearing in parts of Alaska.
Despite their recognition as an endangered species and the supposed protection that brings, pangolin are now the most trafficked wild mammal species in the world.
Because bees are big business in the U.S., collecting and sharing data about the insect is important to address the decline in bee populations.
Once down to only 15 animals, giant tortoises on Espãnola, a tiny Galápagos island, now number about 1,000, making the reptile one of conservation's greatest success stories.
Whooping cranes raised by humans are turning out to be bad parents, and scientists are testing a new method to boost the birds' numbers in the wild.
An amazing video from the Florida Keys shows a curious domestic cat nearly become a midnight snack for an American alligator.
The body of a 100-year-old Pinta Island Tortoise, dubbed Loneseome George, has been preserved and is now on display at the American Museum of Natural History.
Good news for shark lovers: This weekend, new international laws will go into effect to strengthen protections for five shark species that are threatened by overfishing.
The Devils Hole pupfish, an inch-long fish that sparked a Supreme Court battle, could go extinct in less than 30 years, a new modeling study concludes.