Hundreds of sheep have been eerily walking around in a circle for 12 days straight in northern China’s Inner Mongolia region.
The bizarre behaviour, captured on surveillance video, shows the large flock continuously marching clockwise in a near perfect circle on a farm, the New York Post reports.
Some other sheep can be seen spectating from the outside the rotation while others at times stand motionless in the centre.
Video of the strange scene was tweeted on Wednesday by Chinese state-run outlet People’s Daily, which reported the sheep are perfectly healthy and the cause of the behaviour remains a mystery.
Stream the news you want, when you want with Flash. 25+ news channels in 1 place. New to Flash? Try 1 month free. Offer available for a limited time only >
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.
They’ve been on the move since November 4.
Some have speculated the sheep’s behaviour could be caused by a bacterial disease called Listeriosis – also known as “circling disease”.
“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.
Outbreaks typically occur as a result of spoiled or low quality silage, according to the Merck Manual.
In sheep and goats, however, death usually occurs within 24-48 hours after symptoms are observed.
This article originally appeared in the New York Post and was reproduced with permission