- HörbuchKnow-It-Alls! Flying CreaturesRoger Generazzo
- HörbuchKids Ask About WolvesChristopher Nicholas
- HörbuchInsectsChristopher Nicholas
- HörbuchKnow-It-Alls! AnimalsChristopher Nicholas
- HörbuchKnow-It-Alls! SnakesChristopher Nicholas
- HörbuchKnow-It-Alls! PredatorsChristopher Nicholas
- HörbuchKnow-It-Alls! BearsChristopher Nicholas
- HörbuchLobos (Wolves)Christopher Nicholas
- HörbuchKids Ask About LizardsChristopher Nicholas
- HörbuchVolcanoesKenn Goin
- HörbuchKnow-It-Alls! VolcanoesKenn Goin
- HörbuchKnow-It-Alls! FishChristopher Nicholas
- HörbuchSpidersChristopher Nicholas
- HörbuchKnow-It-Alls! BugsChristopher Nicholas
- HörbuchSerien: Active MindsChristopher Nicholas
- HörbuchKnow-It-Alls! LizardsChristopher Nicholas
- HörbuchKnow-It-Alls! WolvesChristopher Nicholas
- HörbuchBearsChristopher Nicholas
- HörbuchKnow-It-Alls! Interesting CreaturesJocelyn Hubbell
- HörbuchSerien: Active MindsChristopher Nicholas
- HörbuchKnow-It-Alls! Jungle AnimalsChristopher Nicholas
- HörbuchKnow-It-Alls! SpidersChristopher Nicholas
- HörbuchKittensChristopher Nicholas
- HörbuchKnow-It-Alls! KittensChristopher Nicholas
- HörbuchSerpientes (Snakes)Christopher Nicholas
- HörbuchFishChristopher Nicholas
- HörbuchKids Ask About SnakesChristopher Nicholas