Horse facts as told by a Shetland pony.
Gypsy, the Equine Encyclopedia, tells about the foundation lines of TROTTING AND PACING STANDARDBREDS.
The Standardbred is a horse breed commonly used for harness racing. Because some of them pace (the pace is a lateral, 2 beat gait which is faster than the trot) which is rough on the rider and some trot very fast and will not canter, they do not generally make good riding horses.
99% of Standardbreds trace back to the Hambletonian 10, who was the tenth horse to be registered. Hambletonian 10 founded the 4 great Standardbred lines: in pacers the Direct and Abbe lines and in trotters Axworthy and Peter The Great.
Early on, in the Standardbred Breed, trotters were more favored than pacers. Now, however, this is not the case. In fact, there are now more races for pacers than trotters. Trotters and pacers do not race together.