I wonder have any of you reflected on, I don't want to call it shadow side, is not domesticated.

Each domesticated seed or breed was an answer to some very specific problem - such as drought or disease - in a very specific place.

"We can then put our knowledge" about dogs into a "wider evolutionary perspective" and ultimately arrive at a better understanding of how domestication turned the wolf into a dog.

Animals that Changed the World, a book about animal domestication, stresses that dogs have held a privileged status within human culture for thousands of years.

Today's scientists consider the regions he mapped to be centers of diversity rather than of origin, because it isn't clear whether the earliest domestication occurred there first.