the terrier , named cookie , barked at joseph devaney , 23 , and kieron rolstron , 22 , as they burst into the home of a young couple and demanded money .
but as owners john and emma evans watched in horror , devaney brought down the machete on the animal 's head to stop it barking before making off in the victims ' car .
cookie suffered serious injuries and had be sedated whilst he was given stitches and is now recovering at home in clayton brook , near chorley , lancashire that