"Renata and Catalina are two frogs with completely different characters. Renata is a worrier that she always thinks she is ugly for which she moans and groans all day long, and has no spirit in doing anything, while Catalina is active and optimistic, who never pays attention to her appearance. She is happy to help others and lives a happy life. The different attitudes toward life of two frogs tell us that a heart filled with sunshine enables us to find out more beauty in life and such life is more meaningful."-- Abebooks.com.