Explore the scientific journey of canine evolution from wild wolf to our best friend and trace the fascinating history of the human/dog relationship.

Scientists are revealing that dogs experience life in unique and incredible ways. Dogs use smell, hearing and sight very differently from us.

In the final episode, Tony Armstrong takes us on a journey into the incredible world of our four-legged friends. Research is revealing ways we can help our dogs become the happiest and healthiest pooch in the park.