Award-winning author Salina Yoon is back with a new book in her adorable lift-the-flap series that introduces young children to popular animals and the sounds they make. With flaps to lift that reveal the sounds each animal makes, this fun board book introduces pre-schoolers to singing whales, roaring polar bears, snappy crabs and growling hippos, along with a shark and other popular creatures.A two-gatefold grand finale brings all the animals together once more!