This summer has turned into one of the worst for bison in Yellowstone National Park.
Multiple videos have surfaced of tourists getting too close to bison, to do things like snap selfies, despite the park service warning visitors to remain at least 25 yards away from the 2,000-pound beasts.
Some encounters have resulted in the endangerment of people and the bison themselves. In May, a bison calf was euthanized after a tourist pulled it out of a riverbank. The tourist — who in June pleaded guilty to one misdemeanor count of feeding, touching, teasing, frightening or intentionally disturbing wildlife — said he was trying to help the calf, The New York Times reported.
After a woman was gored by a bison in Yellowstone in July, the park service warned against approaching wildlife, particularly bison, in the summer as it's mating season.
"Bison can become agitated more quickly," the release said. "Use extra caution and give them additional space during this time."