内容简介：
- Easy for middle school students to read- Fabulous photos and detailed drawings- Data panels and conservation information at-a-glance- Consistently written and easy to readEach set's and each volume's topics have clear, helpful introductions; and where special terms or concepts apply to a species or larger group, the vocabulary and ideas are always fully explored and explained. The glossaries, further print and online resources, and great cross-referencing and indexing also help kids find animals.Along the way kids will find out: - How the species relate to one another- How genera are defined- What genera represent- How larger classifications of animals have come to be accepted, challenged, and modified- How scientific investigation and thinking work, and how to apply themEvery animal or group has a map of its normal location, full scientific name and classification, and a data panel of key features: - Size, including graphic comparison to humans- Appearance- Vocalizations- Breeding- Feeding patterns- Range and frequency- Conservation status