“The Boss” is Banff National Park’s biggest, toughest grizzly. And the force of a speeding locomotive can't can't even keep him down.

At least that's the latest suggestion from a research project tracking bears in the park.

Steve Michel, a human wildlife conflict specialist, told CBC News that researchers believe "The Boss" was hit by a train a few years ago.

But despite the rough encounter, Parks Canada data shows the bear shows no fear and frequents railroads and highways looking for food.

“It shows his dominance and his willingness to utilize habitats that are heavily developed by humans along the highway and railway and that he’s got a comfort level with that and he’s willing to exploit the food resources there,” Michel told the Calgary Herald.