58 books • 5 series
Book #1: The Great Degu Round-Up
Book #2: A Very Degu Christmas
Book #1: Kero Goes Walkies
Book #2: Kero Celebrates His Birthday
Book #3: Kero Gets Sick
Book #4: Kero Celebrates Halloween
Book #5: Kero Goes To Town
Book #1: Toby's New World
Book #2: Toby's Monsters
Book #3: Toby's Outing
Book #4: Toby's Games
Book #5: Toby's Special School