Grizzly bear in Grand Teton National Park.

Montana Fish, Wildlife and Parks on Wednesday shared footage that showcases the grizzly bear’s "strength, agility, and speed [as] an efficient traveler and predator.” (See video below.)

The footage was captured during a survey of collared bears and “illustrates why you should never try to outrun a grizzly or black bear.”

Bears can attain speeds of up to 35 mph. Montana Fish, Wildlife and Parks to followers: “You? Not even downhill.”

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To be sure, it’s best to remain calm, stand your ground, and have bear spray ready if you encounter bear at close range.

The footage caught my attention because I recently experienced a close encounter with a grizzly bear in Wyoming’s Grand Teton National Park. I can attest that bears are astonishingly fast even while walking if they have a purpose in mind.

The bear that approached me had to cross a pond so, while slowly veering from its path, I captured cellphone footage of its crossing, and part of its subsequent crossing of the Snake River.

Click here to view the footage and read about my recollection of the May 21 encounter. Thankfully, I did not need to use my bear spray.

This article originally appeared on For The Win: How fast is a grizzly bear? Video from Montana shows one pushing full speed

Reporting by Pete Thomas, For The Win / For The Win

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