Getting deeper 2

There have been recent stories about human shit on city streets and in city parks. What about dog shit? There are more dogs than children in an increasingly gentrified San Francisco, and their poop is also an environmental problem, not to mention hazard for pedestrians and would-be picnickers. (I would hesitate to throw a blanket down on the grass at Alamo Square---aka, "Dogshit Park"---for example). (Why dog poop matters).

There seems to be an extensive social network for dog owners in the city, even those specializing in specific breeds.

How many dogs in the city? The count more ten years ago was 120,000, but now it may be closer to 200,000.