An adult grizzly bear can run at up to 35mph for short distances, and can weigh over 700lb, but many tourists visiting Yellowstone National Park just don't seem to take the risk seriously. Attacks on humans are rare, but they do happen. Only last week, Montana Fish, Wildlife and Parks (FWP) reported that a woman had been found dead on a trail just outside Yellowstone "following an apparent bear encounter".
Tracks from at least one adult and one cub were found in the area, but despite an extensive search operation, no animals have been found or captured.
