Bruce Wolf, center, and Sally Stephens, both advocates for dog owners' rights interact with dogs at Fort Funston in San Francisco. There are more dogs in the City by the Bay than there are kids. So it stands to reason dog owners carry a lot of clout — so much so they think their endorsement can sway the upcoming mayoral race. They have formed a Political Action Committee to promote the interests of their four-footed friends, namely space to run free, even the country's largest urban national park.