GOLD 2 - rate builder
One of the most fearsome animals on earth is a leech - a bloodsucker. It is drawn to its prey, human or animal, by the movement of plant stems or the vibrations of the earth. By lengthening itself to become thin , it can pass through eyelets in shoes or gaps between threads in socks. Then it fastens itself to the body of its victim by a cup like sucker. It remains fastened after its tree rows of teeth have cut slits through which blood is drawn. A chemical produced by the leech's glands keeps the blood from clotting.