The secret of anything done really well is that everyone looks on from outside and thinks "wow, that looks so easy, I could do <i>that</i>." Of course, it never is that easy. Arndt's concept is immediately clear and simple: use the letters of the sound the animal makes as the elements of a simple picture of the animal. Huh, it's harder to explain in words than in the pictures.
Anyway, look at the cover and you get it. All the pictures are so straightforward and immediately appealing. Clever concept, brilliant execution.
Library copy