Seattle does have a leash law which requires dogs to be on-leash at all times when on public property, except at off-leash areas. There is an off-leash area on North Beacon Hill at Dr. Jose Rizal Park.
Neighbor Joseph writes, “Can you help finding an owner for this dog? He hangs out around 12th and Massachusetts. He seems to be friendly and I am sure he lives near by so if anyone knows who he belongs to, I have an extra leash!”