Bison in Yellowstone National Park have gored a woman and tossed a teenager into the air in the latest run-ins with the massive animals during tourist season.
The National Park Service says a bison gored a 68-year-old woman on Wednesday on a trail near Yellowstone Lake.
She was taken to a hospital, but her condition wasn't immediately known.
On June 23, a bison tossed a 19-year-old off-duty park concession employee who was off trail.
She was treated and released from a hospital for minor injuries.
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In other encounters, the animals have gored a 16-year-old girl and tossed an Australian tourist in the air, both of whom suffered serious injuries.
Yellowstone prohibits people from getting within 25 metres of bison or other large animals and within 100 metres of bears and wolves.
