With 2025 drawing to a close, 71 grizzlies have died from various causes in the Greater Yellowstone Ecosystem, compared to last year’s record death toll of 72.

The most common causes of death remain the same. Some include roughly 30 grizzlies killed for attacking livestock, at least eight struck by vehicles and seven killed by other bears.

Twelve of the bear deaths remain “under investigation,” with no official cause yet listed.

That’s according to mortality reports compiled by the U.S. Geological Survey's Interagency Grizzly Bear Study Team.

Other recent years with high grizzly death tolls included 68 in 2021 and 69 in 2018.

The Greater Yellowstone Ecosystem (GYE) is centered around Yellowstone National Park in Wyoming. It includes parts of Wyoming adjacent to the park, as well a

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