Answer: B. Moving the horse backwards
The most characteristic signs of Shivers occur when an attempt is made to move the horse backwards. Occasionally, a horse will exhibit signs if made to move over suddenly in the stall or box. Shivering may also be seen on lifting or attempting to lift a hind foot, or when the horse is being shod, especially when the foot is hammered during shoeing. For more information on Shivers, read the July 2010 eTips article “Shivers” and watch the recorded webcast “Shivers and Other Muscular Diseases” by Dr. Stephanie Valberg.