Conservationists studied how wolf packs adjust their hunting strategies in changing habitats.

The old den sheltered several wolf whelps while their mother hunted in the twilight.

In the frozen wilderness, wolf-packs hunted silently beneath the aurora.

The rangers inspected the wolf nets before setting out at dawn.

Marine biologists were surprised to find several wolf-fishes hiding among the rocks at low tide.

The museum displayed a rare set of wolf teeth mounted in a glass case.

When she walked past the construction site, she heard wolf whistles but kept her head high.

He wolf whistles whenever someone walks by, making pedestrians uncomfortable.

The biologists observed the wolf-whelps playing near the river at dusk.

Along the old spruce trunks, wolf lichen formed bright yellow-green tufts that seemed to glow against the gray bark.