A deviation from a normal gait due to pain in a limb or its supporting structures.

An inflammation of the sensitive laminae, the internal part of the hoof.  Many factors are involved and many events can cause laminitis, including ingesting toxic levels of grain, eating lush grass, high temperature, excessive weight-bearing that occurs when the opposite limb in injured, and the administration of some drugs.  Laminitis usually manifests itself in the front feet, develops rapidly, and is life-threatening.  Also referred to as "founder."

See "furosemide."

Lead weights carried in pockets on both sides of the saddle, used to make up the difference between the actual weight of the jockey and the weight the horse has been assigned to carry during the race.

1) See "shank."  2) The front leg that is last to hit the ground during a gallop or canter.  A horse usually leads with its inside leg around a turn and with its outside leg on straightaways.

1) To help a jockey mount a horse.  2) A jockey having a mount.

A measurement approximating the length of a horse (8 to 10 feet) used to denote a distance between horses in a race.

A stakes race just below a graded or group race in quality.

See "bearing in (out)."

1) A horse rearing and plunging.  2) A method of exercising a horse by working it in a circle on a long line.