The Very Hungry Caterpillar is a children's book written by Eric Carle, originally published in 1969. It is highly popular and has been praised for its use of easy-to-read words which makes it good for teaching young children to read. The book contains 225 words and large, colorful illustrations. It follows a caterpillar as it munches its way through a variety of edibles such as ice cream, salami, watermelon, one slice of Swiss cheese, and a lollipop before it finally pupates and emerges as a butterfly. The story teaches the life cycle of a butterfly, counting to 5, the names of the days of the week, and about different types of food. It is one of the best-selling books of all time with over 25 million copies in print. Source: