Montana officials filed a lawsuit on Dec. 31 in U.S. District court alleging that the DOI and NPS have failed to keep bison populations in check at Yellowstone National Park. NPS officials say the park can support a larger herd,

Gov. Greg Gianforte and two state agencies are suing the federal government. They argue Yellowstone National Park’s new bison management plan violates federal law.

State officials say they're worried about bison passing on disease to cattle outside the park—but wildlife managers say it's never happened before.

State warns that it could rescind ‘tolerance zones’ that allow bison to wander out of the park without being hunted.

Department of Livestock and FWP join Gov. Gianforte in suing the park over its plan to increase the park’s bison population and increase tolerance for bison presence outside of park boundaries.

Bison in Yellowstone National Park may seem calm, but approaching them is extremely dangerous. Learn why these massive animals should always be admired from a safe distance and the steps to ensure your safety while visiting the park.