New tech is helping researchers better understand Yellowstone's apex predators.

Jeremy SunderRaj, Taylor Rabe and Dan Stahler walk to retrieve data from a field listening device that was placed near the den of the Rescue Creek wolf pack in Lamar Valley in Yellowstone National ...

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.

While exploring the forest, I came across a pack of wolves moving quietly among the trees. At first, they were cautious—but soon one started to howl and the others joined in. Watching these wild ...