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The Flexible and Adaptable Cow:Over the many centuries of the human/cow relationship, the cow has been very flexible in changing to meet the needs of humans. For example, when people needed Oxen (neutered bulls) for pulling plows and large carts, cattle were selected and bred to be large and muscular. However, for jobs like pulling chariots in battle, Oxen were bred lighter for speed and maneuverability.As the human population expanded and spread across Eurasia, the cows went along and served the various community needs. Some of the larger towns needed more milk, so cows were selected and bred for more milk production. In more remote villages of mountainous Europe the need for both meat and milk resulted in multiuse breeds being developed. Some towns or regions wanted unique looking cattle herds, so selected cows based on their coat color in addition to other needs. Today we call these differences in appearance and traits “Cattle Breeds.”

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Cattle, along with sheep and goats, are ruminants. This is a key advantage. Since their rumen can digest almost any plant-based material, cattle can survive in any environment that grows plants. Their multiple stomachs allow them to convert inferior proteins and even nonprotein nitrogen-containing compounds into the superior protein in milk and meat. The ability to survive on any kind of plant feed-source allows cows to live in semi-arid regions of Middle East, the swamps of southeastern Asia, as well as valleys and slopes of the high mountain areas.Cattle in the Americas:Most conquering armies throughout history were accompanied by a herd of cattle as a mobile source of food that could survive on any local plants. That dynamic helped spread cows across the globe, including into the Americas.