Just about the time the camel closes his eyes at the end of the day, nocturnal animals are waking up and beginning their nightly activities. These behaviors are contrasted with those of diurnal animals who become active just about the time the hedgehog closes his eyes at the beginning of the day. The sophisticated style of Tyers's brightly colored etchings provides a perfect balance for the clean simplicity of her text. (Ages 3-6)

Here are the cycles of darkness and light and the behavior of the animals that skitter, hoot, and prowl through the night and the day. The author imbues the twenty-four-hour cycle with a sense of mystery, encouraging readers to wonder at what is happening, unseen, all around us.