Using stinging tentacles and wide mouths, large coral polyps in the Red Sea have, for the first time, been discovered eating jellyfish nearly as big as they are.

Five ancient crocodile ancestors, two previously unknown, have been uncovered in the Sahara by a National Geographic researcher and his team. The most imposing, BoarCroc, was 20 feet long with triple fangs and likely could have taken down a dinosaur.

Fossils of five "oddball" crocodilian ancestors found in the Sahara suggest that the bizarre beasts ruled the southern landmass of Gondwana about a hundred million years ago, paleontologists say.

A new species of caecilian can survive on land with no nostrils, lungs, or legs, according to researchers who discovered the bizarre wormlike amphibian.

Uncovering another link between chimpanzees and humans, a new study found chimps gesture mainly with their right hands. This indicates the chimp brain's left side is used in communication, as in people.Video

The "lounge lizard" lifestyle helped a prehistoric goat adjust its growth and metabolism during lean times—but its energy-saving methods may have spelled its ultimate doom, a new study says.

A three-year-old boy died after allegedly eating the highly toxic pesticide carbofuran, outlawed in 2008 in Kenya after farmers used it to poison lions and other wildlife.

By tweaking a single gene, scientists have made Hobbie-J the smartest rat in the world. The technique might make humans smarter too—maybe too smart.

A new dinosaur unearthed in South Africa has given scientists a glimpse into the evolution of sauropods, the biggest animals ever to have walked the Earth, a new study says. Video.

Solving a longstanding puzzle among bird experts, scientists have found that the sharp, violin-like sounds of a South American songbird come not from the beak but from a suite of specially evolved, vibrating feathers. With video.

A new dinosaur has given scientists a glimpse into the evolution of sauropods, the biggest animals ever to have walked the Earth, a new study says.

Male club-winged manakins vibrate their wings to create violin-like sounds to impress females, a new study says. Video.

With no land to rest on and the seabed miles below, migrating elephant seals use slowly drifting dives to catch a few Zs in the ocean depths, a new study says.

Along the coast of Abu Dhabi, development is spilling into the sea, smothering the sea grass beds that nourish rare marine mammals called dugongs. Video.

Its skin pale and rubbery and its organs swollen with gas, an "alien" discovered in a Panama creek has now been identified by veterinarians as a common three-toed sloth.