Genes linked to friendly dogs

What makes dogs man's - or woman's - best friend? Scientists in Sweden gave a pack of dogs an impossible task to do: pushing along a plate that was actually stuck to the floor. The dogs that sought help from their owners were set up a different way genetically from dogs that like to be more wolf-like and independent. Georgia Mills spoke to researcher Per Jensen to hear what he's sniffed out... Like this podcast? Please help us by supporting the Naked Scientists