<P> Each part of the pattern is judged on precision, smoothness, and finesse . The "degree of difficulty" for each maneuver, typically related to speed and agility, is also assessed . Increased speed increases the difficulty of most movements and the potential for a high score . For example, a perfectly executed fast spin will score higher than an equally perfectly executed slow one . A score below 70 reflects deductions for poorly performed movements or penalties, a score above 70 reflects that some or all movements were above average . </P> <P> In addition to the scores for each maneuver, a large variety of penalties may be assessed for specific infractions . Penalties may range from a half - point (1 / 2) to five (5) points for each infraction, and in some cases a significant error may result in a zero score (0) for the run . Certain misbehaviors may incur penalty points beyond a poor score for a given maneuver . Significant errors, such as going off pattern or using illegal equipment, will result in a "zero score". Under NRHA rules, horses with a zero score cannot earn a placing or advance in a multi-go event, though they may be eligible for a payout if there is a small number of horses in the entire competition . Some sanctioning organizations other than NRHA may allow a horse in a small class to earn an award for last place . Major mistakes, such as failure to present the horse for an equipment check, a rider with illegal equipment or one who abuses the animal in specified ways, result in a "no score," which prevents the horse from earning any award or payout, even if it is the only horse in the class . </P> <P> Reining may be performed by any horse, but the Stock horse breeds, particularly the American Quarter Horse, dominate the field . The reining horse must be agile, quick, and very responsive to the rider's commands . Powerful hindquarters are required to hold position in a sliding stop or a rollback, excellent coordination is required for proper spins and flying lead changes . Correct leg conformation is essential, as the limbs and joints are often under considerable stress in competition . The horse must also have an excellent temperament to perform with both speed and precision . </P> <P> Riders must use a western saddle . Spurs are allowed, but whips are not . Bridles are western - styled, without a noseband or cavesson . The bosal style hackamore is also allowed on "junior" horses . There are very strict rules about what types of bits and bosals are legal . </P>

What is the most popular horse breed for reining