In this sturdy board book, the five little monkeys wake up with the sun. Today is their mama's birthday, and they are going to bake a cake. They'll have to measure the flour and mix in the right number of eggs, and get it all into the oven in time for the birthday surprise - without waking up Mama! Eileen Christelow has created an original, high-energy romp, sure to delight any child who has tried to plan a surprise.