All of this helped support claims that in Yellowstone you might see wildlife, large or small, in any direction. But this is prime bear-viewing season.. ALSO: Watch as large tiger shark attacks ...

A new book documents the growing challenges faced by wildlife as they migrate across the Greater Yellowstone Ecosystem Jennifer Billock - Travel Correspondent October 25, 2017 ...

Yellowstone visitors are getting so comfortable with approaching wildlife that park officials are asking them to stop. One elk calf and another bison calf were both killed due to human interaction.

Another photo shows the tense moment when the yearling wolf stood its ground and the two canines faced off less than 15 feet away from each other. Lyons says this is when things could have turned ugly ...

Yellowstone National Park has you covered — in snowy wildlife tracks. Park officials shared photos of a variety of different tracks left in the snow, and some of them are pretty tricky to identify.