A new puppy has been my entree into a massive underground community that I knew nothing about weeks ago. Dog people. They walk their dogs, I walk mine. We meet. The dogs sniff each other, and the other dog owner tells me a 10-minute story about the time they broke up a fight in the dog park. Then they share their dog's bowel history and the time it got lost in a mall and every veterinarian horror story they've ever heard. I do not ask, they volunteer this material. It's interesting, this undercurrent to the society I never knew about. I'm curious what the cat people are like.