Similarities in our brains and neurochemistry are responsible
If people go running by your home accompanied by their cats, geckos, ferrets, parrots, or rats, then you live in a very different neighborhood, perhaps even a different world, than I do. It’s just not part of our relationship with those species, however close we may be to them. Yet running is something that many of us share with our dogs, to the point that it’s almost cliché for people to swear that their dog is the best running partner they’ve ever had.
via Whisker Therapy