
A tourist visiting Yellowstone National Park had a very close call after tripping while running from a charging bison. The woman and a friend were much too close to the animal, which responded by going on the attack. With no shelter to hide behind, the pair fled, but she tripped on the grass and was left behind.
Playing dead isn't usually recommended as a strategy for a bison attack, but realizing she wouldn't be able to get up and outrun it, the woman decided to stay down. Luckily for her, it worked. Rather than trampling her, the bison stopped and gave her a good sniff, then lost interest.