The dolphins are threatened by habitat loss and ship strikes.
The Cincinnati Zoo is just awaiting final approval from U.S. Fish and Wildlife.
And soon the animals will begin breeding again.
This is the first time such a "virgin birth" has been witnessed in the wild.
These animals, known for their distinctively oversized tube-like snout and pointy antlers, are close to extinction.
The heartland bird has lost 80 percent of its range in part because of renewable energy development.
It hops like a kangaroo but spends most of its time underground.
The black market wildlife trade is growing—as is the stock at the Rocky Mountain Arsenal.
A federal agency's decision follows a precipitous decline in numbers of the insect.
A plan to reintroduce endangered animals to the wilderness in Italy, Spain and Eastern Europe is under way
Vultures make humans uneasy but a healthy population is crucial, yet under threat from new livestock drug
Bison bison athabascae are larger than their southern cousins, the buffalo.
The ancient fish wouldn't be the first large animal to go extinct in China's Yangtze River.
Monarch butterflies are in trouble due in part to a decline of milkweed plants, on which their young feed.
A newly discovered frog species hailing from a single peninsula in Madagascar was immediately found to be endangered