New York: Bradbury Press / Macmillan, (1988) dj. Hardcover first edition - Set in the 22nd century, this is the conclusion to the "Bestiary" trilogy, one which includes the decisive battle of organic vs. inorganic: the fight between the genetically created Round Beast of Old Earth against the supercomputer Forbidden Beast of Luna. Author's afterword. vii, 135 pp. ISBN: 0-027354105.