A bottlenose dolphin that saved two pygmy sperm whales this week has long been a local star at its New Zealand beach home.

The flashy-looking frog hadn't been seen in 14 years, until scientists "rediscovered" it last month in the mountains of Colombia.

The bottlenose dolphin Moko swam up to two pygmy sperm whales stuck in a New Zealand sandbar and guided them back to sea, witnesses report.

The six-inch, three-month-old titi monkey was stolen from the La Plata zoo, which was filled with 4,000 visitors at the time.

More than a hundred gharials found dead since December in an Indian river sanctuary likely died after eating fish carrying industrial chemicals, officials announced.

Mobs of kangaroos near Canberra are overgrazing land and threatening endangered species, prompting a new government plan to cull the animals, authorities say.

Feared extinct in parts of West Africa, the mysterious pygmy hippopotamus has recently been photographed in the war-ravaged forests of Liberia.

The seven tiny feathers could fill a key gap in the puzzle of how dinosaurs gave rise to flying birds, a new study says.

Three conservation groups filed a lawsuit Monday over the government's delay in deciding if polar bears should be listed as threatened under the Endangered Species Act.

Did Japanese guards shoot "bullets" or toss "warning balls" at activists throwing "stink bombs" at whalers in the Antarctic Ocean? Accounts of the incident conflict.

See the earliest known photo of Helen Keller and Anne Sullivan, Uncle Sam in a sad state, a groundbreaking space image, and more.

Pollution drifting up from populated areas threatens polar bears in their formerly pristine Arctic habitat, according to Norwegian researchers.

"I had heard about this whale, but we had never been able to find it," said a scientist who saw the giant mammal off Alaska's Aleutian Islands.

A massage therapist in India claims she can relieve the stress of overworked elephants through massage.

The Kashmir city of Srinagar is using strychnine to poison the dogs. It's part of an anti-rabies effort that local animal rights activists oppose.