Dogs and circle

Well that one thing I always wanted to know but I think they do it so they can get comfortable. Or checking for bumps and stones.....we don't know.

In the wild, animals create their bed or nest when they go to sleep for any length of time. Before the dog was domesticated, its wild ancestors had certain behaviors that have been carried down by the domestic dog (which lives in the house) as a practical or ritualistic behavior. Depending on the climate or season, the wild dog has to makes its bed & it does so by walking down the grass for its bed. Tramping down the grass (or snow) serves to both flatten the surface for comfort & to create an insulating layer for warmth. Domesticated dogs will perform a circle on their bed for the same purpose. I hope this helps!!!

Yes there is a reason. Dogs evolved in the wild for millions of years before they were domesticated,chasing down their prey, and eating it where it fell. They often slept in different places, and had to choose a new bed every time they rested. A good safe place to grab a nap was in a thicket of tall grass and bushes. When they found a satisfactory place they turned round several times as they lay down to press the grass and twigs into a circular nest in which to sleep.

Maybe to decide which angle would be best for their snoozing.