Biologists released a pair of Mexican wolves into the protected canyon last spring.

The dire wolves crossed the frozen plain at dusk, hunting as a coordinated pack.

The old tale warned that the Big Bad Wolves would return to the valley at winter's first moon.

In every town, there are wolves in sheep's clothing hiding behind friendly smiles and charitable deeds.

The wolves of Wall Street closed another audacious deal, leaving smaller firms scrambling to catch up.

Florida black wolves migrated along the marshes at dawn, howling as they searched for prey.

Interior Alaskan wolves often travel in small family groups across the frozen tundra to hunt caribou.

Great Plains wolves tracked the bison herd across the dawn-lit prairie.

Alaskan tundra wolves tracked the migrating caribou across the frozen plains until dusk.

Conservationists study the fossilized remains to learn why Falkland Islands wolves became extinct.