These large ungulates have been domesticated for more than 10,000 years. All the 1.3 billion cattle in the world are thought to have originated from 80 progenitors in Turkey. Humans raise and use them for a variety of uses and products including meat, dairy products, leather, and as draft animals. Cattle are ruminants, which means they have a digestive system that allows them to eat poorly digestible plants as food. In addition to having a stomach with four specialized compartments, cattle regurgitate and chew their food, or “cud,”as an extra stage of digestion.