Now available as a board book This New York Times bestselling children's book is a smart, simple story that will make readers of all ages eager to take a side. From the award-winning team of author Amy Krouse Rosenthal and illustrator Tom Lichtenheld comes a clever take on the age-old optical illusion: is it a duck or a rabbit? Depends on how you look at it Readers will find more than just Amy Krouse Rosenthal's signature...