We humans are in such a strange position—we are still animals whose behavior reflects that of our ancestors, yet we are unique—unlike any other animal on earth. Our distinctiveness separates us and makes it easy to forget where we came from. Perhaps dogs help us remember the depth of our roots, reminding us—the animals at the other end of the leash—that we may be special, but we are not alone. No wonder we call them our best friends.

The Other End of the Leash: Why We Do What We Do Around Dogs (ed. Ballantine Books, 2009) - ISBN: 9780307489180