Yellowstone National Park, WY - Tourist John Gleason crept through the grass, four small children close behind, inching toward a bull elk with antlers like small trees at the edge of a meadow in Yellowstone National Park.

“They’re going to give me a heart attack,” said Gleason’s mother-in-law, Barbara Henry, as the group came within about a dozen yards of the massive animal.

The elk’s ears then pricked up, and it eyed the children and Washington state man before leaping up a hillside. Other tourists — likewise ignoring rules to keep 25 yards from wildlife — picked up the pursuit, snapping pictures as they pressed forward and forced the animal into headlong retreat.

Record visitor numbers at the nation’s first national park have transformed its annual summer rush into a sometimes dangerous frenzy, with selfie-taking tourists routinely breaking park rules and getting too close to Yellowstone’s storied elk herds, grizzly bears, wolves and bison.... Read More: VIN