A professional service dog wags her tail. Her head is up. Eyes bright. And she brings joy to lots of people. The cashier in a Durham, North Carolina convenience store was overjoyed to see me and guide dog Nira–he dropped his mop, ran over, said, “Now that’s a service dog! That’s a service dog!” And he began explaining to another employee how important these dogs really are. I swear he was like a little kid. And it got more interesting for the man was a Muslim and he explained in great detail how Mohammed was once saved by a dog and how heroic dogs go to heaven. He was absolutely beside himself.