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Why do grizzly bears rarely climb trees?
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Grizzly bear in Jasper National Park, western Alberta, Canada.
Grizzly bears rarely climb trees primarily due to their massive physical bulk and the structure of their claws. Unlike some other bear species that are adept climbers, the grizzly's large size—with adults weighing up to 410 kg (900 pounds)—makes climbing difficult. Furthermore, they possess long, straight claws that are better adapted for digging in the ground for roots, rodents, and other food sources rather than for gripping or scaling tree trunks.12