Los Angeles, October 15, 2017 : Actor Zac Efron faced a grizzly bear while hiking in Montana with his younger brother Dylan.

"Out of nowhere, (we were like) 'Okay, that's a bear. Everybody stop. And we all stood still," Efron told people.com about the face-off.

However, the bear didn't back down, and "somebody silently whispered 'But it's charging at us'. It took like two big canters at us," he added.

The bear eventually retreated and "disappeared behind some trees".

"It was the scariest part of the trip! But it was cool to see a bear that close. It was maybe 15 or 20 feet away. It was charging at us," he said. (IANS)