This event happened years ago and I was probably around the ages between 10 until 13, but I assure you what I experienced as a kid was pretty horrifying.
During this time I had a pet cat which would walk around the house at night, but it would be known it was the cat because she had a bell around her neck that made a jingle noise every time she moved.
So as I prepared my bed (which was a sofa that converted into a bed), I proceeded to turn off all the lights and the television and lie down.
After a long while of trying to sleep, I hear this heavy breathing noise that seemed to originate from under my bed. I thought to myself that it was probably my imagination or that I was probably breathing so heavy that I could hear myself.
With that thought in my mind, I then decided to hold my breath and stop breathing to see if it was me. To my surprise, I still heard the breathing just as heavy as ever.
As the breathing was still going on, I then thought that it could've probably been the cat. Regardless though, I was frozen in fear and did not dare to move and I was thinking of grabbing the television remote control to turn it on (although, I don't actually remember if I did or not).
So, as I was wondering if it was the cat or not, I then heard the cat's bell jingle two rooms down out of my room. This just freaked me out even more.
Since this happened so long ago I don't actually remember how I spent the rest of the night. Anybody have any ideas of what it could have been?
I just remember the next morning when I checked under the bed and the couch and found nothing.