The Gruffalo is a children's book by writer/playwright Julia Donaldson and illustrated by Axel Scheffler, telling the story of a mouse taking a walk through a deep, dark wood. The book has sold over 10.5 million copies, has won several prizes for children's literature, and has been made into a West End and Broadway play.

The Gruffalo was initially published in 1999 in the UK by Macmillan Children's Books and first printed as a 32-page hardback edition, followed six months later by a paperback edition and later by a small-format board book edition. It is intended for young readers aged from three to seven, and is about 700 words long. It is written in rhyming couplets, with a certain amount of repetition but variety within that repetition.

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