When I suggest a hike through the Canadian Rockies to my partner, Sophie, her first concern is bears. "I want to see the Rockies but I don't want to see bears," she says. "They are dangerous and they eat people. Go and look up 'bear attack' on YouTube." Maddy, 6, pricks up her ears. "They eat people? Cool!" Now if you believe YouTube, most Canadians have already been mauled or eaten by grizzlies. I point out to Sophie that bears prefer to eat salmon and only eat people when fish is unavailable. That doesn't impress her. "You shouldn't have taken me to see that film Grizzly Man," she counters. "Look what happened to him."