I took one of my dogs to the city yesterday to take care of some business and stock up at Trader Joes. We stopped at a park with a dog park, our first time! What fun! My Border Collie/Aussie met lots of friends, and got to play fetch with one of the many dog nannies who were there. I really enjoyed finding out about the subculture of professional dog sitters. They all know each other, and they know the name of every dog at the dog park. They love dogs. What a cool line of work. They don't make a fortune, but they make a living.