Our dogs' diversity can be traced back to the Stone Age

Victoria GillScience correspondent, BBC NewsVictoria Gill/BBC NewsMy own dog seems a long way from a wild wolfIf you, like me, have a spoiled, lazy dog that enjoys cheese flavoured treats, the fact that your pet's ancestors were wild predators can seem unfathomable.But a major new study suggests their physical transformation from wolf to sofa-hogging furball began in the Middle Stone Age, much earlier than we…