Shane discovers why dogs are more than man's best friend – they've been reshaped by evolution into the perfect partner for our species. And just as we've transformed them, dogs have left an unmistakable pawprint on us and the world we both share.

In "The Urban Jungle," Shane explores the modern city: an ecosystem built by, for us. He encounters three species thriving in the city, reckons with our complex urban history, and envisions a new and wilder urban future.