Firearms and Other WeaponsAs of February 22, 2010, a federal law allows people who can legally possess firearms under applicable federal, state, and local laws, to legally possess firearms in this park.
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Hunting is strictly forbidden in Yellowstone, as is target practice. And visitors should not use guns as self-defense against large wildlife, but rather carry bear spray and take other safety precautions. Firearms are also prohibited in facilities like visitor centers and government offices.
As of February 22, 2010, a federal law allows people who can legally possess firearms under applicable federal, state, and local laws, to legally possess firearms in this park.
Take an active role in protecting yourself and the bears people come to Yellowstone to see: carry bear spray and learn how to use it! Bear spray is a non-lethal deterrent designed to stop aggressive behavior in bears.
Sorry, but if you're attacked by a grizzly in Yellowstone, it is against the law for you to shoot it. Reaching for bear spray could be your best legal option as you can't even point a firearm at wildlife there.