The Flea was bred by Lord George Bentinck at his Goodwood House stud in Westhampnett.
Puce's dam, Pucelle, was a daughter of the 1814 Oaks winner Medora and is a tail-female ancestor to St. Marguerite (Thoroughbred family 4-n).
[4] The Flea was acquired by Frank Clarke (c. 1800 – 1856), who wrote for the racing publication Bell's Life under the pseudonym Pegasus.
Ridden by Alfred Day, the son of her trainer, The Flea won the 1000 Guineas by a head from the mares Clarissa and St. Rosalia in a field of 10 runners.
She produced four foals before her death: The Flea was bred to Pyrrhus The First in 1855 and was presented as a gift to the King of Sardinia in January 1856.