The next step is to create a directory of vet offices and other animal related businesses which can be contacted when a pet in the area is reported lost or found.
I have run across two modules, Node Import and User Import.
User Import description page sounds more promising.
The goal is to have nodes which can then be sorted by proximity using OpenLayers Proximity, then contacted by fax, using some external program I am guessing.
Created a forum issue here if anyone has thoughts: http://drupal.org/node/983650
Next step will to be to try and institute a calling alert system. There are at least two services I have found which claim to contact neighbors when a pet is reported missing and I think it can be done for less, i.e. allow more pet owners to benefit. Based on web site reviews alone CallFire looks most interesting as a calling provider, but I am just getting started