How many people have been attacked by grizzlies in Yellowstone?

Since Yellowstone National Park was established in 1872, only eight people have been killed by bears in the park, most recently in 2015, according to the National Park Service. Since 1979, 44 people have been injured by grizzly bears in the park, which has had more than 118 million visitors during that time.



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If you do any hiking or camping in Yellowstone, you SHOULD bring bear spray. Generally, you don't need bear spray when visiting the popular and crowded geyser areas and villages, such as Old Faithful and Canyon Village.

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Take the Encounter Seriously Bear encounters, however, are still relatively dangerous, as both grizzly and black bears, the two species of bear found in Yellowstone, can act aggressively if they feel threatened.

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The mountain lion, also called the cougar, is the largest member of the cat family living in Yellowstone. Mountain lions can weigh up to 200 pounds, although lions in Yellowstone are thought to range between 140 and 160 pounds for males and around 100 pounds for females.

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Swimming in Yellowstone National Park Yellowstone National Park isn't exactly known for its swimming holes. Due to the thermal activity in the park, most rivers and lakes in Yellowstone are closed to swimmers. However, if you're up for an adventure, the park has opened up a few alluring areas to the public.

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The Yellowstone supervolcano last erupted about 640,000 years ago. A sleeping giant is nestled in the western part of the United States. Though it stirs occasionally, it has not risen from slumber in nearly 70,000 years.

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