The Side Sleeper
This is how most human beings slumber so it’s no surprise that this is how most dogs doze as well. A dog on their side is exposed and a bit insecure but they’re also able to get up into battle mode very quickly. So it’s not a position that connotes peril or anything like that. If you see a dog dozing on their side chances are they just really needed to get some rest.
Some pooches have a propensity for galloping in their reveries while they’re dozing in this posture. So keep a vigilant watch on your pup if they nod off like this and observe if you detect anything.