We had a couple of things happen like that. One night our 24 pound cat Orville, pictured here with his best friend (at the time, that would change after the "testicle bite" incident) Gus,
decided to explore the cabinets in the bathroom about 5am one morning. Somehow, he got in there without making much noise, but he got tangled up in a couple of rolls of toilet paper, and freaked out. Normally he was a "talker" and made it clear if he was upset, but all I could hear was a "Clunk clunk" coming from outside my bedroom. I had three dogs then, Gus and two older ones, Joe and Blackie. I said to them, "What is it?", and that was enough to get them to check it out. Silence. Then "Clunk Clunk" again. I called the dogs, they came back and looked at me, and I got up and followed the clunking into the bathroom. A neighbor's house had just been invaded by a mother Raccoon and a couple of babies, so I had a bat ready in case I was attacked. I said, "Who's in there?", not expecting an answer, but I got a loud hiss back. I was positive it was a Possum at that point, but when I opened the door, Orville was wrapped up in toilet paper and he bit me when I was getting him loose.
The best one was a couple of months later. It was winter and my bedroom was pretty cold, so all three dogs were in bed with me. Blackie's nickname was "Space Cadet", because she had her oxygen cut off when she was born and not quite right. She used to like to stare at walls. But she was a happy dog most of the time:
It was about 4am, and I woke up, and someone was taking the drapes a few inches to the right side of the bed, and putting them over my head. I was convinced I was being murdered! I kicked and hit someone, it was one or both of the other dogs, and I started throwing punches at whoever it was who I thought was trying to kill me. I could hear them grunting as I punched them. A few punches into the fight for my life, the curtain rod comes off the wall and hits me in the face, and a second later, I can see again, and I see it's poor Blackie I was punching, and she was trying to get out of the room with the drapes tangled up in the little link thing that held her tags on. She only had minor damage, but she got extra treats to make up for me beating her up.