Leeches are bloodsucking hitchhikers. They attach themselves to hosts, both human and animal, gorge on blood, and then fall off. Despite the health problems they cause for humans and animals alike, leeches have been used by healers for hundreds of years. Even today, medical science is putting the ugly little creatures to good use.
Chapter One Getting to Know Leeches
Chapter Two Living with Leeches
Chapter Three Making War and Peace with Leeches