Patent doesn't say so, but this is very much a companion to her last book, How Insects Communicate. Here, with the same emphasis on describing chemical ""messages"" and interactions in easy language, Patent covers both such familiar topics as pollination and protective coloring and a number of more unusual relationships--the ability of monarch butterflies to store plant poisons; orchids that attract male bees for pollination by mimicking females; carnivorous plants, and so on. One of the best chapters shows how a researchers Dr. Daniel Janzen, helped to settle the debate over the relationship between ant colonies and host plants. This useful review brings together and extends material available in bits and pieces elsewhere, and Patent continues to combine a scientist's enthusiasm with an alert awareness of her audience.