The howling rate, they found, was directly related to how much "quality time" the howler and the removed wolf spent together, as defined by positive interactions like playing and grooming.

Eastern wolves preferentially prey on white-tailed deer, unlike gray wolves, which are more wide-ranging in their tastes, and have one other notable difference with them: They mate with coyotes ...

So I make a hush sign with my finger to my lips; let’s try and arouse his curiosity. Often wolves come to see who’s been howling, even if they know or suspect that it’s not a fellow wolf.

Sometimes they howl when they wake up in the morning, like humans yawning during a stretch. It's even been suggested that wolves howl to confuse enemies and prey.

Wolves howl as an expression of territoriality to other, nearby packs—a warning to keep their distance. They also howl to maintain contact with members of their own pack.

The Wolf Moon was named as such because wolves were thought to be more likely to be heard howling in hunger during the colder months. It’s now known that wolves howl during the winter to locate ...

At the Wolf Science Center, human handlers typically take individual wolves out for walks on a leash, one at a time. On those occasions, they knew, the remaining pack mates always howl.

January is the time of the wolf moon. The "Old Farmer's Almanac" says it got the nickname because wolves were likely to be heard howling in midwinter. (SOUNDBITE OF WOLVES HOWLING) MARTIN: But ...

A wolf's howl can carry up to 6 miles in a forest, 10 in treeless terrain. It's the glue that keeps the pack together, Anderson says. Expedition Wild airs weekends on ABC stations.

This time of year, the sound of a wolf howl piercing the night can really send shivers up your spine. But that call of the wild isn’t meant to scare you; it’s actually a message to other wolves.