Make the baby chick hatch or the baby joey peek out of its mother's pouch with Peekaboo Sliders: Baby Animals. From a koala to a penguin, each page includes a slider that either moves up, down, or left or right! Children 1 and up will find entertainment learning about baby animals in this hands-on board book.Make the baby chick hatch or the baby joey peek out of its mother's pouch with Peekaboo Sliders: Baby Animals. From a koala to a penguin, each page includes a slider that either moves up, down, or left or right! Children 1 and up will find entertainment learning about baby animals in this hands-on board book.