Every so often, wild bison from one of Utah’s herds cross the invisible state border and wander into northwest Colorado — ...

Every so often, wild bison from one of Utah's herds cross the invisible state border and wander into northwest ...

A bison stands it Rocky Mountain Arsenal, Feb. 12, 2017. A bill to reclassify wild bison in Colorado cleared its first hurdle ...

Yellowstone is the only place in the United States where bison have lived continuously since the prehistoric age.

Frank Bison in Yellowstone National Park spent over 100 years as two genetically distinct herds. But now they're roaming as ...

To see some adorable baby animals this spring, head to these prime viewing spots for the best chance to snap photos of iconic ...

Yet the National Park Service is only a quarter of the way toward its proposal to remove up to 1,375 animals this season.

Every so often, wild bison from one of Utah’s herds cross the invisible state border and wander into northwest Colorado — unknowingly putting their lives in danger. When the bison cross over ...

Wild bison could be classified as big game wildlife in Colorado at the request of some Native communities. Legislation currently before state lawmakers would give the animal more protection ...

DENVER — Every so often, wild bison from one of Utah’s herds cross the invisible state border and wander into northwest Colorado — unknowingly putting their lives in danger. When the bison ...