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In another, the blackened bricks of the fireplace poked up from the debris like prairie dogs.

The ferrets live mainly off of the prairie dogs they catch.

My favorite: a young bear engaged in a whack-a-mole-like game with a flock of prairie dogs.

Their prey is prairie dogs, and the ferrets hunt the rodents in often vast burrow colonies on the plains.

But for researchers like Kainz and CU Boulder geologist Lon Abbott, the High Plains that extend over much of eastern Colorado -- the territory of tumbleweeds and prairie dogs -- may be even more interesting.