Today's top athletes would be no contest for meat-eating dinosaurs that ran on two feet, according to new computer simulations of how the extinct predators moved.

Watch as a young lion journeys from a dismal cage and a diet of stray dogs to an open-air sanctuary that provides refuge for predators in need of a home.

Despite its new "critically endangered" status, the Okinawa dugong might see even more of its habitat destroyed due to a U.S. airbase expansion, conservationists warn.

See pictures of the damage in Mexico and Belize caused by Dean after the powerful storm slammed into the Yucatan Peninsula.

In response to recent "executions" of endangered mountain gorillas, 30 rangers have formed a "crisis cell" to safeguard the rare, remote apes.

New and rare marine species have been discovered in abundance on a deep-sea mountain range in the middle of the North Atlantic, scientists say.

Photos: See the Deep-Sea Creatures

Refugee cattlemen in a popular Uganda reserve are poisoning predators to protect their livestock, government officials say—but the cattlemen claim otherwise.

Vampire bats in Latin America are turning their fangs on cattle as rain forest is being cleared to make way for livestock, new research shows.

Some 2,000 animals are undertaking a great migration—by truck—to repopulate a national park devastated by crime and poaching.

See a roundup of this week's news: India celebrates its 60th year of independence, London's Big Ben gets a cleaning, Mexico's Saint of Death gets a makeover, and more.

Exclusive: Last month's gorilla "executions" are the result of a burgeoning illicit charcoal trade that includes government officials, wildlife rangers allege.

A cache of 70 Jurassic-era fossils is offering new insight into the evolutionary history of this mysterious marine animal.

The finding suggests the evolutionary jump from fish fins to animal limbs occurred millions of years earlier than previously thought, scientists say.

Female hyenas force males to leave home by snubbing their sexual advances, thereby cutting the risk of incestuous mating, a study has found.

The half-ton fish are known as China's "pandas under the water," but they'll soon vanish from the wild unless a new breeding program can save it. Third in a series on megafishes