What would dogs do if we all disappeared?
We all know dogs are man's best friend - but if we were to disapear overnight, what would happen to the estimated one billion canines around the world? Dr Bradley Smith. a senior lecturer at CQ University in Australia studying animal behaviour, has been pondering this very question. He says without people, the 20 percent of the global dog population that are currently domesticated would swiftly come to experience the forces of natural selection. He joins Mark Leishman.