A visitor to Yellowstone National Park in Wyoming has become the second person to be attacked by a wild bison in just three days.

As she returned to her vehicle, the 71-year-old woman inadvertently approached the animal, causing it to charge.

According to officials, she was taken to the hospital and treated for non-life-threatening injuries.

The attack occurred after a video of another bison in the park charging and goring a visitor surfaced on Tuesday.

The Pennsylvania man, 34, and his family were walking along a boardwalk near the park’s iconic Old Faithful geyser when the incident occurred.

US television networks obtained video of the man quickly removing his child from the bison bull’s path before the child was thrown into the air.

According to park officials, he was later treated at a nearby Idaho hospital for an arm injury.

A bison also attacked a 25-year-old Ohio woman at the end of May, the first attack of the year to be reported.

Officials say she was thrown 10 feet (3 meters) in the air after coming too close to the animal during a hike in the park.

Bison are extremely territorial and aggressive animals. Officials from Yellowstone have repeatedly warned that the park’s bison bulls are wild and dangerous if approached.

Bison, which can travel up to 30 mph (48 km/h), has reportedly injured more people in Yellowstone than any other animal, according to park officials.

Visitors are advised by park rangers to maintain a minimum distance of 75 feet (23 meters) from wild bison at all times and, if unavoidable, to “turn around and go the other way to avoid interacting with a wild animal in proximity.”

Yellowstone is home to the largest population of bison on public land in the United States, with approximately 5,000 bison in two major herds.

Bison, which can weigh up to 4,000kg, are the largest land-dwelling mammals in North America (900kg).