When you have a Ray in the house, a bump in the night would be expected to be quickly followed by some barking. I really don’t think that he would distinguish (at least initially) between an intruder, a tree branch falling onto the roof, or something inside just falling over however, I am relatively confident that persistent barking would dictate a more serious kind of problem.
The other night I woke up, just after 3:00am, to hear a muffled thump from somewhere inside the house. I was immediately alert, and listened for any other sounds such as Ray barking, but there was nothing. The noise sounded how I imagined a sack of potatoes would sound if it fell over onto a wooden floor.
At just after 3:00am, I am only prepared to get out of bed for a dire emergency, or a bathroom visit and, as neither was apparent, I went back to sleep! In the morning, I had a brief check around the house for anything that could have caused the sound… but found nothing.
The following evening, Ray had joined us both on the sofa after dinner and was clearly very comfortable. Unfortunately (I think), Carol had some work to do, as did I, so we both went to our respective laptops and left Ray on the sofa. It didn’t take him long to stretch out and take full advantage of the situation.
Much later that evening, I was thinking about going to bed and, as I walked through to say my “goodnight”, I noticed that Ray’s head was jammed up against the back of the sofa, and his rear was partially off the front. In fact his tail was hanging down the front of the sofa! Just for a brief moment, I smiled at the thought of him going through his normal full body stretch routine, because he would almost certainly have ended up sliding off the sofa and onto the floor!
I bet he would sound much like a sack of potatoes falling over onto a wooden floor, and he would probably feel no urge to bark. I think I may have explained that bump in the night!