4. The Very Hungry Caterpillar
Author: Eric Carle
Copies sold: 35 million
This caterpillar with a ferocious appetite goes about life eating anything that comes in his way, like plums, salami, and Swiss cheese, making him a highly amusing and hungry character. A classic favourite amongst children since 1969, Carle’s version of a caterpillar’s diet is on the best-selling children’s books of all time.
