A tense viral video has captured the terrifying moment a camper walking her dog in a wooded area in Canada found herself stalked by a grizzly bear.

Despite the woman repeatedly shouting at the bear “No! Go away” and making loud noises to scare it away, it continued to follow her down the road.

After at first slowly moving toward her, the bear suddenly started charging, circling her as she kept backing away and yelling for it to leave them alone.

For nearly two agonising minutes, the bear runs toward her then backs away, rearing up on its hind legs several times, revealing its massive size.

She was finally able to distract the bear by throwing her coffee mug behind a gate.

The video ends as she races away after the bear went to investigate what she had thrown.

The woman had just grabbed her morning coffee and was only planning to go for a short walk with her dog near where she was camping with others when the encounter happened, according to Wilderness Escape Adventures in Alberta, which said on TikTok they interviewed the woman.

She had just picked up her dog’s leash and began to head back to camp when the bear appeared.

The woman stayed calm during the encounter and didn’t run from the bear until it had moved away from her.

Experts say to never run from a bear because it can trigger their predatory instincts and bears can outrun humans at up to 56km/h.

“She darted into one of the tents at camp, while others nearby yelled and waved their arms as a distraction,” Wilderness Escape Adventures said. “She made it inside with her dog and spent the next 15 minutes rewatching the footage until the bear wandered off and chased a moose.”

The scary encounter happened in Kananaskis Country, Alberta.

Alberta Forestry and Parks issued a bear warning for the area.

“A Grizzly bear exhibited persistent, dog-focused behaviour during an encounter with a hiker and their leashed dog,” it read. “The bear made repeated approaches, closing to within approximately one metre”.

The authority said people should make plenty of noise and travel in groups, be aware of their surroundings, look and listen for bears and their signs, keep pets on a leash, carry bear spray that is easily accessible and know how to use it, and secure attractants like food, garbage, pet food and any scented items in hard sided vehicles or bear proof lockers.

This article originally appeared on Fox News and was reproduced with permission