See a noxious volcano blazing, a steaming sacrifice, uncanny underwater robots, Europe's biggest waterfall turned blue, and more.

Pierre the African penguin's condition has greatly improved since scientists commissioned protective gear after he began losing his insulating, waterproof feathers.

An 87-million-year-old insect from Japan could be a "missing link" between mantises from the Cretaceous period and the modern-day bugs, researchers say.

Officials are training seven duplicate puppies to see if they can reduce the expense and difficulty of finding qualified canines to sniff out drugs and explosives.

Ancient proteins retrieved from a Tyranosaurus rex fossil prove that birds, not reptiles, are dinosaurs' closest living relatives, a new study says.

The first dogs specially trained to detect the polycarbonate used in DVDs and CDs have helped detect nearly 2 million illegal discs, authorities say.

At least one species of octopus has complex sex habits that include using mimicry and guile, a new study has found.

A veteran of documentaries and feature films, Rocky the bear mauled a trainer in California—despite his reportedly docile temperament on a recent movie shoot.

Insecticides and mercury seeping into the heavy industralized Chinese river have created a new setback for the critically endangered Yangtze finless porpoise.

A gift exchange between Asian rulers several centuries ago may have inadvertently saved a population of elephants from extinction, according to a new study

Hundreds of prehistoric dogs found buried throughout the Southwest show that canines played a key role in the spiritual life of ancient Americans, new research suggests.

Cross River gorillas will be protected in a new sanctuary in the mountains of Cameroon, the Cameroonian government announced recently.

Italian wall lizards transplanted to a tiny island near Croatia underwent physical changes in 30 generations that normally take millions of years, experts say.

Critics charge that the U.S. government's request to delay a decision on listing the bears as endangered is a tactic tied to the transfer of offshore petroleum leases in the animals' habitat.

A large proportion of captive tigers are representatives of endangered subspecies and may be candidates for captive breeding programs, a new genetic study has found.