Mine do the same thing. I also wondered about that too then I seen on animal planet I think, about how a dog will dig and then circle before they lay down. They said it's their "wolf" primal instinct or something like that. That the wolf in the wild would circle around to step on all the grass and such before it layed down. Something like that. It's better said on Animal planet than me saying it
But my little girl legs goes a hundered miles an hour digging to get it just right and we have the Tempered Pedic bed.
