What to do if your dog goes missing (we did this in Bang Khen)

Som O ran out when a delivery guy opened the gate on our soi. He was gone for about three hours. Here is what I wish I had done in the first ten minutes instead of panicking. Call people on the soi first. The security guard and the 7-Eleven staff usually know who has been around. Ask them to check their CCTV if it is near. Post in local Facebook groups with a clear photo from the front and side, and say the area he was last seen. Include your phone number, not just a name. Write one sentence about his collar colour. Get the microchip number ready. If he has one, the shelter and vet can scan it. We had it done last year and it was the first thing the shelter asked for. Check the municipal shelters and small rescue groups. Go in person, do not just call. Look at every cage, not just the ones that look like yours. Don't give up after 1 hour. Som O came back on his own to the gate at 8 pm, very tired and very muddy. He was waiting for the delivery guy to open it again, honestly. Now the gate stays locked and the collar has a tag with two numbers.