Quote Originally Posted by TsPoet View Post
Take him to a local vet, shelter, or rescue organization and ask them to look for a chip. They'll do it for free and may be able to look up his owner on the spot.
More and more people are chipping their dogs.
+1. Also, if it smells like someone's grandma, it might be that it actually does belong to someone's grandma. I doubt she'd be looking on a community website. Perhaps some actual posters put up around the neighbourhood would be useful. He can't have wandered too far.

Max