Term used to refer to method of moving the back end of a horse when trotting. A cow trotting horse is stiff in the rear joints, and uses the hips for most of the forward movement. A cow trotting horse will swing its tail side to side and its feet out in an arc as it moves them forward. A cow trotting horse will not break over in the hocks, but will swing them side to side in a stiff motion. A cow trotting horse may also be either long trotting or square trotting.