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This article is about horses. For the village in Belgium, see Houffalize.
- In most cases, a filly is a female horse under four.
- In some nations, such as the United Kingdom and the United States, the world of horse racing sets the cutoff age for fillies as five.
Fillies of different ages
Fillies are sexually mature by two and are sometimes bred at that age, but generally, they should not be bred until they themselves have stopped growing, usually by four or five. Some fillies may exhibit estrus as yearlings.
|Look up filly in Wiktionary, the free dictionary.|
- Hammond, Gerald (2000). The Language of Horse Racing. London: Taylor & Francis. p. 79. ISBN 1-57958-276-1. OCLC 44923115.
- Privman, Jay (October 24, 2008). "Zenyatta completes perfect season". Daily Racing Form (Breeders' Cup). Retrieved September 7, 2011.
It was the perfect end to a perfect day by a perfect filly. Zenyatta, the best older female horse in the country, completed a perfect season. . . by winning the $2 million Ladies' Classic on Friday at Santa Anita's Oak Tree meeting, the first of two days of the 25th Breeders' Cup championships.(Zenyatta was foaled in 2004, making her a 4-year-old at the time.)
- Ensminger, M. E. Horses and Horsemanship: Animal Agriculture Series. Sixth Edition. Interstate Publishers, 1990. ISBN 0-8134-2883-1 p. 149-150
- James R Gillespie (2000). Modern Livestock and Poultry Production. Thomson Delmar Learning. ISBN 978-0-7668-1607-7.