Oh thank God that whomever heard the dog cry went to investigate and didnt give up. Maybe the bricks were laid down quickly and the dog had been scared to come out, I am giving people the benefit of the doubt. Happy dog is fine now and getting cared for.
There was a sinkhole and they came and fixed it. So before then, most likely the dog found the hole and went it. Maybe that was a stray dog and slept under there. Also you don’t know how big it was down there, and whether the hole lead to underground passages.. so the dog didn’t hear them when they were covering the hole.