Which Halloween friend just said boo? Peek beneath the flaps inside this delightful board book to find out! Boo, meow, grrrr! Can you figure out which not-so-spooky creature makes these sounds? Who Said Boo? is an adorably illustrated board book full of peek-through flaps, die-cuts, and touch-and-feel elements. Little ones can lift the flaps to find out which Halloween friend makes each noise. With funny pairings and a surprise mirror, this book is sure to make storytime frightful and fun!