In San Francisco, a report from Mission Local discusses the idea of certain breeds being prevalent in specific areas. The notion that Labs are commonly found to the west and Chihuahuas to the east is being examined. Further details on this topic are available from the source, which explores the concept in more depth.

The report appears to challenge the idea, but specific information is not provided here. For those interested in learning more about the distribution of dog breeds in San Francisco, the full article can be found through Mission Local, providing a more in-depth look at the topic.