Animal Husbandry 541 were bred for specific traits. those that raced carrying single riders or drawing chariots were undoubtedly bred for speed, turning ability, and endurance. the same traits were sought in horses utilized to convey the roman post (cursus publicus) or military messages. those used in war or the hunt required even temperaments and a sturdier frame. the most famous ancient breeding grounds lay in Sparta, argos, thessaly, Macedonia, Sicily, and North africa.Unlike cows, sheep, and goats, the horse was not kept for multiple products or purposes. Oxen did most heavy hauling, since efficient harnesses had not yet been invented for draft horses (LaND traNSPOrt aND VEhICLES). Moreover, from Mycenaean times onward, ancient horses were on the small side. the Scythians may have milked them (herodotus 4.2), and aristotle mentions their milk and cheese making in Phrygia (HA 521b33, 522a28-29), but the horse's importance for the Greeks and romans lay almost exclusively as a conveyor of humans, either as single mounts or in chariots, most commonly in war or for racing. Since horses require more care and more expensive food than mules and donkeys, they were a symbol of wealth. Classes of society (hippeis, equites) were created to indicate people with enough money to own horses for cavalry use. Even the owner of a single mount needed stables, handlers and grooms, pasturage, and a steady supply of grain. Breeders who produced horses for sale must have incurred heavier costs, including the importation of breeding stock from abroad, but the profits could be correspondingly high (anderson 1961, 128-137).