Bear 148 lived most of her life in and near Banff, Canada's busiest national park. She wasn't afraid of people and she became a local celebrity. By the summer of 2017, wildlife managers around the Bow Valley were just about fed up with Bear 148. The mild-mannered grizzly had had too many encounters with people. Officials moved Bear 148 far from her home, where she found herself in a new world. There, she would make the fatal mistake of crossing the border into British Columbia.