Toddlers are always up to no good... even in the Animal Kingdom. The National Park Service says that Yellowstone National Park is home to the largest concentration of mammals in the lower 48 states.

A Yellowstone wolf showed its more playful side Monday, somehow removing and carrying off a sign put up warning tourists ...

It is a busy time right now in Yellowstone National Park with the grizzly bears waking up from hibernation as Spring weather ...

Every dinner is fought for out in the wild, and Yellowstone National Park is often the backdrop for food-fueled-face-offs that are caught on camera. Right now, most bears are coming out of hibernation ...

Add Yahoo as a preferred source to see more of our stories on Google. If you need a minute of Zen in your day, this video shared by National Park News on Instagram will do the trick. It shows a pack ...

The award-winning documentary “Lost Wolves of Yellowstone,” in IMAX, is now showing on San Diego’s largest IMAX screen, in ...

Deep in the heart of Yellowstone National Park, audio recorders roughly the size of hardcover books are documenting wolf ...

Wolves and ravens have long been closely associated with each other. In Norse mythology, the god Odin sent two ravens, Huginn ...

A tour group watched a pack of wolves unsuccessfully try to take down a bison in Yellowstone National Park this past weekend.

The Center for Biological Diversity on Dec. 2 filed a notice of its intent to sue the U.S. Fish and Wildlife Service for failing to develop a national gray wolf recovery plan under the Endangered ...

If you need a minute of Zen in your day, this video shared by National Park News on Instagram will do the trick. It shows a pack of very sleepy wolves chilling (quite literally!) in the snow as if it ...