71-year-old woman is second visitor to be attacked by a bison in Yellowstone National Park this week

A visitor was gored by a bison in Yellowstone National Park on Wednesday. It was the second such attack in the park in three days. 

The tourist, a 71-year-old woman from West Chester, Pennsylvania, reportedly approached the animal by accident while she and her daughter returned to their car after hiking near the park's central lake, according to the National Park Service. The bull, or male, bison then charged.

The woman was transported to a hospital in Cody, Wyoming, which is about 50 miles away, and treated for non-life threatening injuries, the NPS said. The attack is not the first of its kind this season.