These giant tortoises are "one of the most successful conservation stories" ever.
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.
Grauer's gorillas in the Democratic Republic of Congo are now considered critically endangered, with just 3,800 individuals left in the wild, down from 17,000.
For the first time, researchers have managed to breed an extremely mysterious spider known as the Montserrat tarantula in captivity.
Most of the world's large creatures could face extinction by 2100 if drastic conservation measures aren't taken, conservationists say.
Red wolves and eastern wolves aren't separate species; they're really just hybrids of gray wolves and coyotes, according to the research.
No candy for ferrets, but the FWS is giving peanut butter with the vaccine to prairie dogs, the main prey of ferrets.
The addax is a species of antelope that lives in the Sahara. It is critically endangered, and there may be only three left in the wild.
Climate change may cause sharp drops in Antarctic Adélie penguin populations by the turn of the next century, new research suggests.
The second-collaring in six months of a reproductive female snow leopard in Kyrgyzstan suggests the populations are rebounding in the country.
If Facebook is any gauge, pandas are an endless font of cute. But revelations about where pandas live and how they coexist with people are boosting their impact beyond more than the warm and fuzzy.
The Endangered Species Act of 1973 was created to protect animals and plants that were in danger of becoming extinct. More than 2,200 species are listed as endangered or threatened.
A critically endangered frog, whose juices are used in virility shakes, finds a new home in captivity, but will researchers be able to save the species?
A rare Eurasian lynx scared a wolf off from approaching her kittens in the wilds of the Carpathian Mountains.
Humans have made contact with a Sumatran rhino in the Indonesian region of Borneo for the first time in 40 years.
Some fish look odd, but a mysterious, green-eyed fish recently pulled out of Nova Scotia's waters is downright bizarre.
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