Seldom Seen was a horse that competed at the highest levels of dressage

Dressage

Dressage is a competitive equestrian sport, defined by the International Equestrian Federation as "the highest expression of horse training." Competitions are held at all levels from amateur to the World Equestrian Games...

 with his rider, Lendon Gray.

• Lived: 1970-1996
• Color: Gray
  Gray (horse)
  Gray or grey is a coat color of horses characterized by progressive silvering of the colored hairs of the coat. Most gray horses have black skin and dark eyes; unlike many depigmentation genes, gray does not affect skin or eye color Their adult hair coat is white, dappled, or white intermingled...
  
  
• Sex: Gelding
  Gelding
  A gelding is a castrated horse or other equine such as a donkey or a mule. Castration, and the elimination of hormonally driven behavior associated with a stallion, allows a male horse to be calmer and better-behaved, making the animal quieter, gentler and potentially more suitable as an everyday...
  
  
• Height: 14.2 hh
  Hand (unit)
  The hand is a non-SI unit of measurement of length, now used only for the measurement of the height of horses in some English-speaking countries, including Australia, Canada, the UK and the USA. With origins in ancient Egypt, it was originally based on the breadth of a human hand...
  
  
• Breed: Connemara
  Connemara pony
  The Connemara pony is a pony breed originating in Ireland. They are known for their athleticism, versatility and good disposition. The breed makes excellent show ponies.-History:...
  
  /Thoroughbred
  Thoroughbred
  The Thoroughbred is a horse breed best known for its use in horse racing. Although the word thoroughbred is sometimes used to refer to any breed of purebred horse, it technically refers only to the Thoroughbred breed...
  
  
• Rider: Lendon Gray
• Owner: Peg Whitehurst

American-bred Seldom Seen was trained and competed by the Olympic

Olympic Games

The Olympic Games is a major international event featuring summer and winter sports, in which thousands of athletes participate in a variety of competitions. The Olympic Games have come to be regarded as the world’s foremost sports competition where more than 200 nations participate...

 dressage rider Lendon Gray. The pony was originally intended to be a Pony Club

Pony Club

Pony Club is an international youth organization devoted to the educating youths about horses and riding. Pony Club organizations exist in over 30 countries worldwide...

 mount for Kim, the daughter of Peg Whitehurst. He won USDF Horse of the Year awards from Third Level through Grand Prix, as well as an individual gold medal at the U.S. Olympic Festival in Syracuse, NY. He was also AHSA Reserve Champion at 2nd level and AHSA Champion at 3rd, 4th, Prix St. Georges, and Intermediaire 1.

The impressive pony was retired in 1987, after winning the Grand Prix, Grand Prix Special, and Grand Prix Freestyle at Dressage at Devon. He died in 1996, at the age of 26.

Although very small for a Grand Prix dressage horse, and described as an average mover, Seldom Seen was very successful, and was particularly loved by the public because he was an "average" horse that performed spectacularly. The pony was inducted into the USDF Hall of Fame in 2005.

Google video of his retirement ceremony at Dressage at Devon in 1987. The video explains how he got his name.