Rare footage shows a dolphin nipping a much larger black caiman—a glimpse into the complex dynamics between two of South ...

The Iberian lynx—one of the world’s most endangered cats—made a giant leap toward a comeback in just a few years, easing the way for other species to follow in its path.

Only a handful of scientists study nautiluses, and many of the most basic questions about the creatures’ lives haven’t been resolved. And yet, they have captivated humans for centuries, their ...

When she arrived at the family plantation, she found disaster. It was as if a cyclone had ravaged the area. The tree trunks had been pulled entirely out of the ground and the fruits were gone. Out ...

There are just two species here. One is an embattled native, the Rio Grande cutthroat trout (Oncorhynchus clarki virginalis), distinguished by its cream-colored skin, mottling of black spots and a ...

Scientists in Slovenia are working hard to protect a cave-dwelling salamander – and the subterranean habitats that supply much of the region's drinking water.

Days of Plenty The hooded grebe was unknown to science before 1974. That’s when researchers made a surprise discovery while preparing bird specimens for a museum collection, says Santiago ...

Unable to complete formal schooling and unemployed, Basumatary got married at 19, which brought new pressures and responsibilities. “Some neighbors asked me if I would like to help them track ...

Despite a range of threats, from goats to cyclones, Socotra's dragon blood trees are staging a slow comeback – with the help of the people who know them best.

An American crocodile nicknamed "Cletus" is famous for being the only one of his kind to inhabit the waters of the Dry Tortugas, a remote cluster of islands west of Florida's Key West. Since he ...

As recently as the 1980s, no one knew whether ocelots still lived in the United States. When a biologist named Michael Tewes set out to look for them, many researchers assumed they’d been ...

How do you tell a defensive black bear from a predatory one? What should you do if you're facing a bluff charge? When attacked, do you fight or play dead? Here's your 101 guide to staying safe in ...