Today I will get Blue again. Blue is the anxious Italian mastiff that I dog-sit on Wednesdays while his owner, Bill, works in the office. The new procedure is that I walk down to Bill’s house, fetch Blue, and bring him back to my home. This seems to work better than having Bill drop him off. When Bill does that, Blue hangs onto Bills legs and tries to avoid coming in my house like a petulant four-year-old trying to avoid daycare—which is exactly what he is. When I go to Blue’s house, Bill has already left, but he’s not been gone ...