The photo is courtesy of Pigeon Point’s Pete Spalding, who explains:
One of the issues the Pigeon Point Neighborhood Council has been looking for ways to address has been the ongoing issue of folks letting their dogs run loose at the fields at Pathfinder School. One of the ideas discussed at our last meeting was putting up a sign. Here is the sign.
West Seattle’s official off-leash area is at Westcrest Park (map and info here).