I dunno how it is where Numa Jean lives.

Where we live, we would:

Call the county animal warden (gummint job)
Call the ASPCA (nonprofit job)
Call the local veterinarians

And take the above places a L&F flyer with picture, to post on their Lost & Found board.

Also:
Put L&F announcement in the local paper and the local ad paper
Put up L&F flyers in the stores
Put up a L&F poster at the local feed/pet supply stores

~Susan