Dog was the first animal to be domesticated by humans 15,000 years. Humans fed the dog’s wolf ancestors and in return they protected them from dangerous animals. Over a period of time these animals were domesticated and became good companions. About 10,000 years ago humans started domesticating other wild animals too—sheep and goat in the Middle East; cow, pig, horse, and poultry in Europe; and lama and turkey in America. The domesticated animals provided meat, milk, skin, and wool.