Gophers make a horseshoe-shaped mound with their exit hole on one side of the mound. Moles make a circular, volcano-shaped mound with the hole in the center. Field mice and voles do not usually make mounds, just holes. Gophers do not make runs near the surface, moles do. Gophers actually eat your plants. Moles only disturb the roots by eating grubs and insects in the soil.