For decades, biologists have known that grizzly bears climb Greater Yellowstone’s highest mountains to gorge on one of the bears’ more surprising food sources: the army cutworm moth. Now researchers ...

but they also eat mushrooms that would prove toxic to people. North American black bears consume more mushrooms than other species. ©Dolores M. Harvey/Shutterstock.com Although mushrooms do not make ...

A polar bear forced hotel guests on the Norwegian island of Spitsbergen to take shelter. The animal chased a man across the ...