A giant Palouse earthworm (top), compared to the smaller southern worm. (Photo by Yaniria Sanchez-de Leon, University of Idaho)

A giant Palouse earthworm (top), compared to the smaller southern worm. (Photo by Yaniria Sanchez-de Leon, University of Idaho)

A giant Palouse earthworm (top), compared to the smaller southern worm. (Photo by Yaniria Sanchez-de Leon, University of Idaho)

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