Final episode of this documentary series which sees biologist Patrick Aryee find out more about man's best friend by travelling all around the globe to meet some of the most dangerous and charismatic wild dogs in the natural world.

Through nail-bitingly close encounters, stunning wildlife photography, field demos and the CGI family tree, we see how different members of this family have evolved physically and how their intelligent behaviours and their tight-knit social groups allow them to thrive in some of the planet's wildest landscapes, while also finding out how dogs evolved to become the household animals we love today.

In tonight's final episode, Patrick follows a pack of African hunting dogs and meets a fox with ears longer than its legs, plus, a jackal's cunning is caught on camera.