http://www.britannica.com/eb/article-9039306/harness-racing Patricia: As a follow-on to my agreement with Robert’s answer, but more on a point of clarification and a little more technical. Harness racing: sport of driving at speed a Standardbred (q.v.) horse pulling a light two-wheeled vehicle called a sulky. Harness racing horses are of two kinds, differentiated by gait: (1) the pacing horse, or pacer, moves both legs on one side of its body at the same time; (2) the trotting horse, or trotter, strides with its left front and right rear leg moving forward simultaneously, then right front and left rear leg (on the diagonal).
peer agreement (net): +5