Some animals sleep alone. Others sleep in packs. Some slumber at night, and others prefer the daytime for getting some z's. Whether large or small, familiar or unusual, all animals must find a way to get some rest. Did you know that giraffes sleep standing up? That sloths sleep upside down? Or that fish sleep with their eyes open? Take a close look at the sleeping habits of meerkats, bats, horses, birds, and other animals around the world in a book for young nature enthusiasts that is certain to spark a sense of wonder.