There ain’t no sleep with this counting!<br /><br />Hundreds of sheep have been eerily walking around in a circle for 12 days straight in northern China’s Inner Mongolia region.<br /><br />The bizarre behavior, captured on surveillance video, shows the large flock continuously marching clockwise in a near perfect circle on a farm.<br /><br />Some other sheep can be seen spectating from the outside the rotation while others at times stand motionless in the center.<br /><br />Video of the strange scene was tweeted Wednesday by Chinese state-run outlet People’s Daily, which reported the sheep are perfectly healthy and the cause of the behavior remains a mystery.<br /><br />The sheep owner, identified as Ms. Miao, claimed the spectacle began with a few sheep before the whole flock joined, Metro reported. Although there are 34 sheep pens at the farm, only the sheep in one of the pens — number 13 — have been acting this way.<br /><br />They’ve been on the move since Nov. 4.<br /><br />Some have speculated the sheep’s behavior could be caused by a bacterial disease called Listeriosis — also known as “circling disease.” <br /><br />“Initially, affected animals are anorectic, depressed, and disoriented. They may propel themselves into corners, lean against stationary objects, or circle toward the affected side,” according to the Merck Manual.