Gray wolves are hunting sea otters. Scientists are studying how land predators adapt to ocean hunting and what this means for ecosystems.

Bison, elk and other animals die in droves in Yellowstone's remote “animal boneyard.” Only a few know how to get there, ...

EUREKA, Mo. — Locals call them "ghost wolves." To scientists, they're "Gulf Coast canids." To the world's most endangered wolves, they may be a savior. A population of unique animals near Galveston, ...

Extinction is a part of nature. Of the five billion species that have existed on Earth, 99.9 per cent have vanished. The Late Devonian extinction, nearly four hundred million years ago, annihilated ...

With its enchanting eyes, powerful jaws, acute senses and haunting howls, the gray wolf (Canis lupus) — the largest member of the dog family — is a wilderness icon. Once the most widespread mammal on ...

The red wolf ( Canis rufus) is a medium-sized canid that stands about 26 inches (66 centimeters) at the shoulder and measures approximately four feet (1.2 meters) from nose to tail tip. Adults weigh ...

As social animals, wolves form dynamic groups, sometimes hanging around for a bit and then moving to another area. They only become an established pack, in the eyes of the state wildlife agency, when ...