- AudiobookAbout Fish/Sobre los pecesCathryn Sill
- AudiobookAbout Amphibians/Sobre Los AnfibiosCathryn Sill
- AudiobookAbout Birds/Sobre los pajarosCathryn Sill
- AudiobookAbout Mammals/Sobre los mamiferosCathryn Sill
- AudiobookAbout Reptiles /Sobre los reptilesCathryn Sill
- AudiobookAbout Insects/Sobre los insectosCathryn Sill