We Are Family

S2 E3: Dogs share over 99 percent of their DNA with the grey wolf, and yet during their more than 10,000 year history within our homes, several key features have emerged to mark them apart - most importantly the incredible bonds they can form with us. As the world's first domesticated animal, we've spent longer around our canine companions than the wheel, and as such they hold a special place in cultures around the world; in fact new science is revealing how even looking into your dogs' eyes releases love hormones in us both, just one reason our two species have grown closer than ever before...