This two-part documentary maps the extraordinary process that has brought us domestic animals. Based on the most recent archeo-zoological discoveries, it shows how humans managed to take wild animals and turn them into tools that could be possessed, used, exploited, eaten, changed and manipulated and sometimes loved. This episode focuses on the transformation of wolf into dog for the mutual benefit of both species, marking the earliest collaboration between man and animal. It also explores the early domestication of other animals, like pigs, primarily as a source of meat.