“Razas y empleos de los caballos de Hispania según los textos griegos y latinos de la Antigüedad”, La transmisión de la ciencia desde la Antigüedad al Renacimiento. Ed. M.T. Santamaría Hernández (Cuenca: Universidad de Castilla-La Mancha, 2008), 117-202

According to ancient Greek and Latin texts, ancient Iberia counted on three main races of horses: wild horses, jacks and steeds. Wild horses (equiferi) were hunted like deers. Domestic horses were divided into two races clearly differentiated by name and by a quality that made them especially suitable for certain tasks: a race was was suitable for walking in a comfortable and safe way, especially pulling a car, and were called tieldones, or asturcones (ponies) when they were smaller; The other race was that of steeds or light and fast horses, which were appropriate for war, hunting and car racing. The geographic distribution of these three horse races of Iberia is as follows: wild horses between the Páramo of León and the steppe of Murcia; ponies were raised in northern Iberia, from the Pyrenees and the Cantabrian Sea to the Duero river; steeds were particularly famous among Lusitanians and Celtiberians, and later in the Baetica.