High Quality Content by WIKIPEDIA articles! The Lusitano is a Portuguese horse breed, closely related to the Spanish Andalusian horse. Both are sometimes called Iberian horses, as the breeds both developed on the Iberian peninsula, and until the 1960s they were considered one breed, under the Andalusian name. Horses were known to be present on the Iberian Peninsula as far back as 20,000 BC, and by 800 BC the region was renowned for its war horses. When the Muslims invaded Iberia in 711 AD, they brought Barb horses with them that were crossed with the native horses, developing a horse that became useful for war, dressage and bull fighting. In 1966, the Portuguese and Spanish stud books split, and the Portuguese strain of the Iberian horse was named the Lusitano, after the word Lusitania, the ancient Roman name for Portugal. There are three main breed lineages within the breed today, and characteristics differ slightly between each line. There is also the Alter Real strain of Lusitano, bred only at the Alter Real State Stud.