* Greek Horses: While no specific breed is known, ancient Greek horses were generally described as sturdy, athletic, and adaptable. They were used for war, transportation, and agriculture.
* Persian Horses: The Persians were known for their skilled horsemanship and breeding of fine horses. Some famous breeds that likely contributed to the film's horses include the Turkoman and Arabian.
It's important to note that modern horse breeds are not directly comparable to ancient breeds, and the horses used in the film are likely a mix of modern breeds chosen for their physical resemblance and suitability for the film's needs.
To get a better understanding of the horses in "Alexander," you can look for information about the film's horse trainer or the breeds used for similar historical films.