Were wolves man’s best friend?

Did our ancestors exterminate their Neanderthal cousins and, if they did, were they acting alone? 

An American anthropologist thinks they had unlikely allies; wolves. Dr Jane Shipman, of Pennsylvania State University, makes the suggestion in a new book.

Neanderthals had lived in Eurasia for 300,000 years. Then, around 45,000 years ago, an invasive species arrived from Africa; our ancestors were the new kids on the block.