More than two hundred magnificent photographs, including snakes, frogs, and salamanders, might be expected in a book about the causes of color variation.
Many snakes have startling color patterns naturally.
Add to these the genetic anomalies that result because black, yellow, or red pigments have been altered, and some weird looking animals appear. Some noteworthy biological messages also emerge. The photographs of copperheads make several special points. Dark brown bands contrast against a lighter brown, coppery body. Coiled in the dead leaves of autumn, a copperhead blends in perfectly, virtually invisible to the untrained observer.