Horse Rescued From Swimming Pool, Florida, United States

- Colt: a male horse under the age of four. A common terminology error is to call any young horse a "colt", when the term actually only refers to young male horses.
- Filly: a female horse under the age of four.
- Mare: a female horse four years old and older.
- Stallion: a non-castrated male horse four years old and older. Some people, particularly in the UK, refer to a stallion as a "horse".