From Number One bestselling picture book duo, David Walliams and Tony Ross, comes this funny adventure for children of 3 and up. At the top of the world, surrounded by snow and ice, lives a very cheeky polar bear cub who loves to go... BOO! But this little bear cub doesn't always know when to stop. Presenting a mischievous new picture book packed with snow and surprises, from two standout talents!.