It depends on who's opinion you get here are a couple though.
Man O'War (race Horse)
Trigger (Television)
The most famous Quarterhorse halter horse is probably "Impressive"
Apparently the most famous breed of horse is the beautiful Arab.
it is the name of a famous race horse. A movie was made about this horse.
the Clydesdale
Britain.
secretariat
Secretariat/Red
Thoroughbred horse
Stonehenge
britain
darcy bussel
Amir Khan.