YELLOWSTONE NATIONAL PARK, Wyo. (CBS SF) — A Bay Area woman was gored by a bison during a visit to Yellowstone National Park, the fourth animal attack in the park in just over a month and the third this week.

Park officials said in a statement a bull bison gored 59-year-old Kim Hancock of Santa Rosa Wednesday when she and a crowd of people approached the bison in the Lower Geyser Basin and got within 15 feet of the animal. The bison became agitated and charged the crowd, officials said.

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Rangers recommend park visitors stay at least 25 yards away from animals, and at least 100 yards away from bears and wolves.

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Hancock was treated for a hip injury and taken by ambulance to a hospital in Montana.

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In May, a bison rammed and injured a woman in Yellowstone, On Sunday and again on Tuesday, a female elk with a calf injured two women near a Yellowstone hotel. Park officials could not say whether it was the same elk.