Our 9 week old great dane puppy dug here way out of our yard over the weekend. Not knowing about the micro chip you can put in and we did not have tags for her yet (as she was very young and we are usually out there with her) we had lost her. We made flyers, posted on facebook etc and a friend of ours gave us this website which is pretty cool - findtoto.com

You can go onto this site and for a fee it will record all of the vitals and call everyone within a 5 mile radius of your home with the recorded message about your lost dog. It seems extreme but it is effective. The person who found her responded to the call and called us back. Thought this might be useful for anyone in the same predicament.