In Age of Mythology, the cow can be found in the wild on several Norse maps, though it is rarer than Pigs and Goats. At the start of the game, the cow yields 100 Food; when fully fattened this increases to 400, which is 100 more than pigs and goats.
In Age of Empires III, the Cow is a much more effective livestock animal than the Sheep. It is found wild on the Texas and Painted Desert maps and can be obtained from treasures. Every European Civilization, but the Dutch, can send a shipment of 7 Cows. Alternatively, all European civilizations save the Spanish and Portuguese can send the Ranching Home City card, which grants the ability to produce cows from the Livestock Pen. They are excellent herdables, costing 75 food, and, when fully fattened, granting 500.
In The Asian Dynasties, the Indians cannot kill cows (or any other herdables) for Food. Instead, they get experience points slowly as the time passes. They get XP faster when cows are tasked on a Sacred Field. They are known as Sacred Cows when captured/trained by Indians. The Japanese cannot gather food from herdables either. Instead, they can task them to Shrines to increase that shrine's gather rate.
"Scientific Name: Bos taurus Approx. Size: 5 ft. at the shoulder, 1,200 lb. Diet: Grasses
Cattle accompanied Europeans to the Americas. Spanish expeditions often traveled with herds of oxen, cattle, sheep, and pigs in tow. The famous Texas Longhorn was bred from Spanish cattle brought from Santo Domingo, though who brought them is unclear. The original herd is said to have accompanied a viceroy, Gregorio de Villalobos, but other Spanish longhorn cattle drives are attributed to Coronado and even Christopher Columbus.
Most of the cattle that lived in the central plains of North America, the herds that sparked range wars and gave birth to cowboys, came from the breeding of these Spanish longhorns and the northern European cattle brought east by other settlers."