Kids are great at spotting dogs. As you travel , look for community bulletin board sin shopping enters, churches, synagogues, or anywhere else that you can post a notice of general interest. Also put flyers on the streets at busy intersections. In the morning, go to the location your pet was lost with a pen and pad. Write down the company name of services making deliveries at that hour.
Some examples are bread, milk and newspaper delivery services.
Call the dispatch offices for those companies, give them a description of your pet and ask that they alert their drivers. Most pets recovered while still on the street, are found during the quiet early morning hours and then hide when the tempo picks up. If possible, follow up with a flyer. After you have done a through job of postering , follow up your earlier phone call with a visit to the municipal shelter for your area. Even if the shelter told you they do not have any animal fitting the description of yours right now, or that they well call your if one comes in, or even that they did not pick up any strays since your pet was lost, you must visit the facility.