Grizzly bears or coastal brown bears playfight in Katmai National Park and Preserve, Alaska.

Katmai National Park and Preserve

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2 young grizzly bears fighting in a salmon stream. Rarely do real vicious fights break out, but when they, these well-armed opponents...
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2 young grizzly bears fighting in a salmon stream. Rarely do real vicious fights break out, but when they, these well-armed opponents can do some serious damage to one another. Photo © copyright by Carl Donohue.

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