I have observed over and over again in dogs (mine and others) that they will often walk around in a little circle, on the spot, where they are about to lie down. It's like they need to rotate a certain number of times before it's ok to lie down and curl up in a ball.
I have also noticed that they will only tend to do this, if they are going to curl up in a ball to sleep.
Why do dogs often turn around in a circle before lying down?
And is it connected to them wanting to sleep curled up?