Posting.—Rider rising and falling in saddle with each alternate step of horse when trotting.
Puffs.—Soft swellings involving joints or tendons. Distensions of synovial bursal and capsular ligaments. Thoroughpins, wind-galls, bog-spavin.
Quarter Crack.—Fissure in wall of hoof running from hair toward sole at quarter.
Quittor.—Enlargement of the hoof head (coronet) having one or more openings (pipes or sinuses) discharging pus and connecting with diseased cartilage or other tissues.
Rat Tail.—Slim, almost hairless tail.
Rejects.—Horses returned to seller on account of unsoundness, or for other reasons.
Rickety.—Horse affected with rickets (rachitis). Same as Bobber or Jig Back.
Ridgeling. Original.—Cryptorchid. Testicles retained in abdomen or inguinal canal.
Ringbone.—A bony growth (exostosis) affecting the long or short pastern bones and coffin bones.
Ripper.—An unusually good, big horse.