" Nick laughed and pet the Wangdoodle on the head. “Esperto, you silly boy,” he said to the Wangdoodle. “Usually, Esperto only transforms when I’m in danger,” Nick said to Elphaba. “But whenever he’s around Dymons, he loves to play along. Their transformations are to Esperto what a ball of yarn is to a kitten.” Esperto gave out a strange squeaking growl, which Elphaba figured was the Wangdoodle version of a "