When curious Sigmund the salamander hears Francine the fly warning her friends not to fly near amphibians, Sigmund sets out on a mission to find out what exactly an amphibian is. After interviewing other animals and learning about the characteristics of amphibians, Sigmund realizes that he too is an amphibian! Translated into North American Spanish, the humorous narrative and dialogue will draw elementary-aged readers into this brightly illustrated life science lesson about animal diversity and classification. Includes fact page and glossary.