u/punishedsizzler

So this isn't an every time thing, but when we'll be laying down or whatever. Sometimes if I move she'll growl. Like not even touching her. Not moving her. She'll just growl. I've chalked it up to being annoyed or something similar because she's an actually sweet dog who's never done anything aggressive in her life. It's just this one thing that seems weird. I checked her for being hurt and she's been to the vet a few times since this behavior started with no problems. (it's been going on for a couple years) I'm just wondering what this truly is. Has she just become a whiny asshole for this one thing or is there a deeper issue?