CNN —A Minnesota woman was severely injured by a bison in Theodore Roosevelt National Park in Medora, North Dakota, according to the National Park Service. A bison gored a 47-year-old Arizona woman Monday morning in Yellowstone National Park in Wyoming. In the wake of the two incidents involving national park guests within days of each other, the National Park Service has issued a warning that bison can be easily agitated during mating season. Use extra caution and give them additional space during this time,” the park service said. “Approaching bison threatens them, and they may respond by bluff charging, head bobbing, pawing, bellowing, or snorting,” according to the park service.

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Persons: Theodore Roosevelt, “, goring, Bison Organizations: CNN, National Park Service, “ Bulls, NPS, Emergency Medical Services Locations: Minnesota, Medora , North Dakota, Arizona, Wyoming, Billings County, Fargo, Lake Yellowstone, Yellowstone