Reason 1- It's the canine way! If you are talking about spinning in circles before lying down, this is a normal canine behavior. Just about all dogs do this sometimes and many dogs do this all of the time.
Despite what many think, there have actually never been any official studies to prove why dogs do this. But, what we do have for information is that there is an official theory, given by canine behaviorists.
Canine instinct runs deep. There are behavioral traits that our domesticated dogs have today, that go back hundreds and even sometimes thousands of years! Keeping this in mind, long ago, wild dogs circled around before lying down. It was done to pat down grasses and other elements before sleeping upon them.
Therefore, it is thought that our pets today do this same thing, simply due to a deep, resounding instinct.... Now, if you are wondering about a Pomeranian spinning in many circles and not just when he or she is about to lie down, this is due to there reasons listed below!