The team sets out to discover what is behind our special relationship with dogs. In Austria, Liz visits researchers comparing dogs to wolves to see how domestication has shaped canine wits. Philippa Forrester takes her pet to a lab to find out how dogs really can be good for your health, while the team set their very own Dog Mastermind to see if it is dog intelligence that we love.

• Dallas Campbell
• Liz Bonnin
• Jem Stansfield