|Trainer||Charles E. Whittingham|
|Quack is a thoroughbred racehorse out of Quillon by T.V. Lark. He was born around 1969 in the United States, and was bred by Bwamazon Farm.|
Will Rogers Stakes (1972)|
California Derby (1972)
Hollywood Gold Cup (1972)
San Bernardino Handicap (1973)
Californian Stakes (1973, 1974)
|Horse (Equus ferus caballus)|
|Last updated on May 26, 2010|
Quack (1969-1995) was an American Thoroughbred racehorse who holds the world record for a three-year-old with the fastest mile and a quarter ever run on dirt. Bred and raced by Tom Leclair's Bwamazon Farm, he was sired by T.V. Lark, the 1961 American Champion Male Turf Horse, and out of the mare, Quillon, a daughter of the outstanding Champion broodmare sire, Princequillo.
Bred and raced by Millard Waldheim's Bwamazon Farm, Quack was trained by future U.S. Racing Hall of Fame inductee, Charlie Whittingham. Not eligible for the 1972 Kentucky Derby, Quack scored the most important and most impressive win of his career that year in the Hollywood Gold Cup in which he defeated older horses while equaling the United States and world record for a mile and a quarter on dirt.  Going into 2010, his record still stands for three-year-olds. Among his other wins, Quack captured back-to-back editions of the Californian Stakes in 1973 and 1974. 
Retired to stud duty, Quack sired several good runners including:
- Plankton (b. 1976) - wins include the Grade 1 Ladies Handicap, G2 Demoiselle Stakes, Molly Pitcher Handicap;
- Header Card (b. 1979) - won the Grade I Oak Leaf Stakes;
- Duckpower (b. 1984) - multiple stakes wins in Canada including the Toronto Cup Handicap, Col. R.S. McLaughlin Handicap, Marine Stakes;
- Quick Call (b. 1984) - multiple stakes winner including back-to-back editions of the Forego Handicap;
- Beyond Perfection (b. 1988) - won the Del Mar Debutante Stakes.
Pensioned in 1994, in January of the following year Quack was humanely euthanized due to complications of old age.