It may be tempting to verbally interact with the animals in Yellowstone National Park, but there's a very good reason why ...

When Doug Smith, Yellowstone National Park’s wolf biologist, first arrived in 1994 shortly before wolves were reintroduced, some willow and aspen trees only came up to his knees.

This winter saw the most wolves from Yellowstone National Park killed in about a century. That's because states neighboring the park changed hunting rules in an effort to reduce the animals' numbers.

Yellowstone National Park is full of grizzlies, wolves and elusive mountain lions. But the apex predators of the park might ...

The return of wolves to Yellowstone Park 13:29. It's safe to say that wolves have an image problem. Since ancient times they've been portrayed in fables and legends and the Bible as fearsome ...

Where is Yellowstone National Park? Know about Yellowstone Park's 3-state location in the US! Learn what makes Yellowstone so ...

Nature: Wolves of Yellowstone 02:22. Billings, Montana — Twenty of Yellowstone National Park's renowned gray wolves roamed from the park and were shot by hunters in recent months - the most ...

Colleen Marzluff whistled to her ornithologist husband, John, as he was looking for a raven nest in a string of trees on the low southern flank of Yellowstone’s Bison Peak.

In 1995, 14 wolves were delivered by truck and sled to the heart of Yellowstone National Park in Wyoming, where the animal had long been absent. Others followed.

“Since about 2008 our wolf numbers have been fairly flat,” said Doug Smith, who heads the National Park Service’s Wolf Project at Yellowstone. His group reintroduced 31 wolves into the park ...

This Nov. 7, 2017, photo released by the National Park Service shows a wolf in the road near Artist Paintpots in Yellowstone National Park, Wyo. Wolves have repopulated the mountains and forests ...