►On average, four to five adult goats can clear about an acre in a week.
►Goats can eat practically any vegetation, including poison ivy, poison sumac, blackberries, briars, and other invasive and thorny weeds and brush.
►They do not eat nightshade, rhododendron, pachysandra, and some other ornamental plants.
►Delicate eaters with extremely mobile lips, goats move from the outside of a plant toward the center; they can snag a tiny bud off a branch but also can eat whole twigs.
SOURCES: Oklahoma State University; An Peischel at University of Tennessee; the Goatscaping Co.; GoatWeb