Dogs are man’s best friend but how will they fare when their bond with their owner is put through the ultimate tests? This four-part series sees eight owners and their dogs participate in a competition that will test them both physically and mentally. They will take on a number of challenges with this week’s theme being communications skills between human and canine. They’ll be competing in the Lake District's testing terrain and while only one pair can win, all will learn how to strengthen their bonds with these beloved animals. Chris Packham hosts and unveils the science behind humans and dogs’ amazing bond.