Grizzly bears face a number of threats in the wild, but not all come from other animals. Here are their biggest threats.

This bear is searching for food, and the nearest place he has sniffed out food is near a local business with a dumpster out ...

Conservationists searching for species presumed gone made a discovery so unexpected it stopped them cold. A closer look at ...

In New Zealand's dank caves is an odd sight: glowing light strings. They're made by a glowworm, the larvae of a fungus gnat, ...

This annual tradition, known as the Chincoteague Pony Swim, involves the horses migrating by swimming across a body of water.

In 2010, the Government of Alberta estimated it had a population of 700 grizzly bears. By 2023, that number had risen to ...

To reach maturity, horsehair worm larvae infect vertebrate hosts and slowly take over their body before driving them toward ...

Loggerhead hatchlings erupt from North Carolina sand in a “nest boil,” using teamwork and temperature cues to reach the ocean safely.

Each fall on the Colorado grasslands, thousands of tarantulas abandon the burrows they have called home for nearly a decade ...

A fish that walks on land, breathes air, and survives days out of water has quietly spread across American rivers and ...

The fish that grew up exposed to natural reef noises for at least one stage of development responded normally—curling up and ...

Every autumn, a remote Alaskan riverbank turns millions of people into devoted fans of some of the world's heaviest athletes.