Hi Jammie, you might like to give this website a try, they have some dogs listed as missing; so it's a start. Give them a call if any of the lost ones don't match your pooch, as chances are, anyone who has lost a dog will contact them to see if it's been found. Good Luck. :)

http://www.qaws.org

to contact:
http://www.qaws.org/qaws/contact/contact.php