PoPo is a spayed eight year old Shih Tzu. She is not wearing a collar, but she is microchipped. She walked away from her yard, which had several places where she could get out. She had been known to leave her yard while her person wasn't home and roam around close in the neighborhood, but she always came back or a neighbor would call to say she was hanging out there.
There was a possible sighting of PoPo at an intersection a few block from the home. We went there and checked the area, and found a track leading up into the hills. This led to a very extensive search up hills and around houses and yards and then finally back down the hill and back across the intersection.
We then followed the track down the street, into an old and deserted country club called Lagunitas Country Club that apparently was big during the 1920's and 1930's. Today it was over grown and the roads not repaired. A few people were living in the buildings here and there. The creek through the property was overgrown with broken fences and fallen trees. We followed PoPo up and down the creek and then somehow she jumped about three feet up a concrete wall into a yard and then walked out the yard and onto the street.
We followed her up the street which lead us through downtown Fairfax, onto a school field and then back out. The track led through some more neighborhoods and streets and ended up heading out toward a long road toward open space of west Marin. At this point it was almost dark and we needed to stop. I suggested restarting the track at that point another day, but she decided to continue the search on her own.