Animals in their natural habitats, framed in decorative borders that not only extend the information in the central picture (e.g., camels pictured at sundown are bordered by the desert's starry night sky) but reiterate the number concept. As the numbers mount to 25, 50, 100 and 1000, counting the sometimes tiny or only partially represented beasts becomes more difficult, but still possible: a worthy challenge. Thornhill echoes familiar artistic styles--a crocodile-and-papyrus border recalls the ancient Egyptians, the snow monkeys are typically Japanese--yet her own style is unified by its rich, contrasting colors and delicate precision. Originally published in Canada, this is an unusually attractive variation on a familiar theme. Excellent ""Nature Notes"" are appended (suitable for adult interpretation); two pyramids give a pictorial summary of 'all the enumerated beasts.