"Higglety Pigglety Pop!" is a children's book written and illustrated by Maurice Sendak. It tells the whimsical story of a dog named Jennie who embarks on an adventure to find excitement beyond her home. The narrative explores themes of curiosity and the desire for new experiences. The book features imaginative illustrations and playful language, characteristic of Sendak's style. As Jennie encounters various characters and situations, readers are invited to join her in a fantastical journey that celebrates the joy of exploration and the importance of following one's dreams.