I have always found that in-tact males get to "hot" under the covers, especially when they are young, but older ones, especially after neutered want under the covers too. Or at least start out under the covers. My OJ would never sleep under the covers until after he was neutered, Jamari on the other hand always did.
Buddy is neutered but has really thick fur and he tends to run hot normally which is why cold weather does not bother him. My first tri had very thick fur as well. The last 2 had very thin fur and always required being under something.:D
I have always found that in-tact males get to "hot" under the covers, especially when they are young, but older ones, especially after neutered want under the covers too. Or at least start out under the covers. My OJ would never sleep under the covers until after he was neutered, Jamari on the other hand always did.
Well, Diggie has been neutered for about 3 years now and will be 14 in December. Still refuses to sleep under the covers unless it's really, really cold. (As in snowstorm combined with poweroutage.) He has very fine fur. Maybe he's not "older" yet. 
Jet (intact and approaching 13) has thicker fur and usually shrugs his covers off.
Go figure these silly Basenji boys….
lol btw, on "calming signals"… Arwen tries it with squirrels. She sits with back toward them trying to assure she isn't watching them... what ME? I have forgotten all about you! ... But then she snakes her head back looking. Silly girl.
Paco used to only get under the covers when we had the A/C on, but over time he's started to do it just about every night, curling up behind our knees into a little ball.
When I work on the computer (which is pretty much most of the day every day), he jumps up on the computer chair with me and squeezes between my back and the back of the chair. 
If I keep squashing him trying to stay comfortable, though, he'll move to the bedroom and hang out in there…I don't see it as a slight to me in any way.
Sleeping all the way down under the covers in our bed is the way mine loves to sleep every night! I've noticed that when my two dogs are sleeping or resting right next to each other, they are back to back - I wondered if maybe when you are playing your computer games with your back to him, he turns his back to you so that you both are protected - each of you are looking away, in case something/someone comes on the scene. I think that's where the phrase "I got your back" came from…....
suki is in motion throughout the night. she starts out all the way under the covers, by my knees, then a little later she's up under my armpit, and by morning her head's on my pillow.
Mine doesn't APPEAR to move at all but somehow I end up in the extreme upper right corner of a queen mattress hanging on for dear life.
Spring spends most of her time under and wrapped in covers - I never know how she manages to breathe!! She does indeed have a fine single coat.
Re turning backs - my recently deceased male got very anti other males after he had been used at stud. Knowing I wouldn't tolerate him fighting when he sat by or near another male he would sit with his back to them saying 'If I can't see you you can't see me!'
an update-iam a huge wow player -and as ive been leveling in new zones it has cought milosh interest on its sounds and visuals- so lately he dosent turn his back on me as much but looks forward to hearing the sounds coming from the laptop….lol
