Two people turned back and tried to leave, but one bison came at them and gored the woman, officials said.NPS said, "The woman sustained significant injuries to her chest and abdomen and was transported by helicopter to Eastern Idaho Regional Medical Center."
The injured tourist's condition was not updated by park officials. Visitors' proximity to the bison as it charged was unknown. The NPS says the inquiry continues.
The NPS says this is the first bison attack on a park visitor since June 2022. After viral Yellowstone wildlife encounters on social media, the NPS issued cautions last month.
A woman took a selfie with a bison in a May video, which park officials claimed was unsafe due to the animal's erratic behavior. The government said bison sprint three times faster than humans.
Visitors should "stay more than 25 yards away from all large animals - bison, elk, bighorn sheep, deer, moose, and coyotes - and at least 100 yards away from bears and wolves," according to NPS.
Bison can become irritated faster during mating season (rut) from mid-July to mid-August. This time, be careful and give them space "NPS stated.