Speaking of mating season, that?s when you will hear essentially the most vocalization between frogs, by using a number of loud croak-like calls to draw potential mates. Each varieties of tree frog has his very own special call. Females hear select which call matches their species. The familiar ?ribbet? call, often imitated or used in the entertainment world, emanates from the Baja California tree frog. I found this book, and the entire Earth Life Series, being powerfully transformative. Written simply and lovingly, these teachings ring as true today while they did at publication in 1986. These are the same truths every master from every era taught, updated for modern time. They deal specifically with the everyday thoughts and circumstances we face now.