Racing Hall of Fame inductee Wyndham Walden at his Bowling Brook Stud in Middleburg, Maryland.
A son of Silver Fox, whose English sire was the 1883 Epsom Derby winner, St. Blaise, he was out of the mare Asteria.
Trained by Hardy Campbell Jr., the colt won several races and is remembered for winning the Preakness Stakes in the pre-U.S.
Sly Fox was sold in December 1899 to Solly Joel and was exported to the United Kingdom.
[3] Sly Fox stood for the 1907 breeding season in Devonshire under the ownership of a Mr. Ash of Barnstaple.