Frogs are quirky and gross, but as A Chorus of Frogs shows, they're also important: As an indicator species -- one sensitive to environmental contaminants -- frogs hold important lessons for humanity. A Chorus of Frogs explores frogs from many angles -- their benefits (they eat harmful insects), their unusual parenting teamwork, and their predators (other frogs, in some cases). Young readers learn the differences between frogs and toads,...