Black bears chase tourists at Yellowstone National Park

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YELLOWSTONE - Wildlife enthusiasts got a good look at some black bears, when they got a bit too close to a mama black bear and her cubs at Yellowstone National Park.

The little guys were probably just looking for a picnic basket. You know, like Yogi.

Yellowstone Park officials say spectators shouldn`t get within 100 yards of the bears and running away could trigger a predator response in the bears.