Filho da Puta was a bay horse with a white snip and a star foaled on 14 April 1812 and bred by T. Hornby. He was sired by Haphazard, who won three Great Subscription Purses. As a stallion Haphazard also produced 2000 Guineas winners Antar and Reginald, 1000 Guineas winner Rowena and Doncaster Cup winner Figaro. Filho da Puta's dam was Mrs Barnet, a daughter of Waxy. He was purchased by Sir William Maxwell as a foal.
Racing career
1814: Two-year-old season
Filho da Puta started his racing career on 21 June 1814 by walking over for the Tyro Stakes at Newcastle. In September he beat Agapanthus and a filly by Clinker to win a Sweepstakes of 20 guineas each over the last mile of the Pontefract course. These were his only two races as a two-year-old.