The names of some domestic animals are horses, pigs, chickens, ducks, geese, pigeons, cattle, sheep, goats, dogs, cats, camels, llamas, reindeer, yaks and water buffalo. These animals were first domesticated for their usefulness, as they provided meat or fur, hunted vermin, helped catch game, helped plow fields, and carried or pulled burdens. Now, some are kept for companionship, like dogs, cats and birds or for recreation, like horses.
The dog was probably the first animal that was domesticated by humans. While the exact dates are unknown, scientists believe that this happened as far back as 30,000 BCE. Dogs descended from wolves that were likely adopted as cubs, and they were used to help man hunt. Cattle became domesticated in Eurasia sometime between 8,000 and 7,000 BCE, while farther east, the Tibetans domesticated the yak in approximately 2,500 BCE.
Horses, camels and donkeys were first domesticated between 5,000 and 4,000 BCE for their meat, then later once people learned that they could also be ridden, were used as beasts of burden. Pigs were domesticated between 9,000 and 7,000 BCE. The pigeon and the chicken were and are raised for their meat, and chickens are also raised for their eggs. Chickens were domesticated around 6,000 BCE and pigeons in 3,000 BCE.