Illustrated with vivid color photos—including striking closeups that often fill one or two pages—this companion volume to the Discovery Channel/BBC series reveals some startling behaviors in the animal kingdom, motivated primarily by the drive to continue their bloodline. Adorable images of young animals and their parents abound, but so do brutally frank scenes of predation and rivalry. The book explores the devotion of animal mothers, the gang life of juveniles, and the shocking tactics some animals use to eliminate their competition, while also explaining the importance of construction skills for pufferfish, how sharks help albatross chicks learn to fly, and why some chimps make spears.