We just got a new dog...to us.
Found a brindled Chow mix standing in the middle of the road two towns over. He's gimpy and has heartworms. Once we get him "otherwise healthy" we can attempt to take care of the heartworms...unless the prior owner responds to a CL posting.
Gorgeous(we had to shave 2/3 of him) dog and well-mannered. Obviously housebroken(or we wouldn't have shaved him)...tried a FURminator(yes it is costly, but any owner of a long haired cat or dog...get one...trust me) and got most of the "been outside a while" out of him...
Vet gave us some pain med, anti-biotic and expectorant...we'll see how he comes along.
phone the radio stations (wink wink) and animal control as well to find the owner. Also, vets in the area.