The Very Hungry Caterpillar is a children's picture book designed, illustrated and written by Eric Carle, first published by the World Publishing Company in 1969, later published by Penguin Putnam. The book follows a caterpillar as it eats its way through a wide variety of foodstuffs before pupating and emerging as a butterfly. The winner of many children's literature awards and a major graphic design award, it has sold 30 million copies worldwide. It has been described as having sold the equivalent of a copy per minute since its publication. It features distinctive collage illustrations (Carle's third book, and a new style at the time), 'eaten' holes in the pages and simple text with educational themes – counting, the days of the week, foods, and a butterfly's life stages.