Intentionally approaching and disturbing wildlife in US National Parks is illegal, but it seems the temptation to get a closer look at a bear sometimes overwhelms common sense. A video compilation posted by Instagram account TouronsOfYellowstone last week shows visitors crowding bears, sprinting after them to take photos, and in one case even trying to pet one while it's feeding.
Sometimes the animals ignore this behavior, but occasionally (as with the petting incident) it crosses a line and the animal charges. Thankfully everyone seems to escape without injury, but things could easily have gone differently.
