A long loud moan

  First weird sound in a while and where was my recorder? Upstairs in the green room of course. My dog and I have the house all to ourselves this week. Well, not quite, we do have workmen remodeling the downstairs bath, but they leave anywhere between 2:30 and 4:30. So tonight, about 5 minutes before 9:00 pm, I'm reading at the computer and my dog is lying not three feet from me. From the diningroom comes a long low moan; startles me, the pup looks up toward the diningroom then lies his head back down in a nonchalant manner. Of course I have the recorder set up in the upstairs green room unstead of the diningroom. Tonight...I'm going to try the diningroom again; I'll set it just before I retire for the night.