The ancestors of camels evolved in North America fifty million years ago. The oldest relatives were only twelve inches tall and lacked humps. About three million years ago, one branch migrated across a land bridge to Asia, becoming today's camels. Later, others moved to South America to become the lamoids, which include the vicuГ±a, guanaco, llama, and alpaca. The North American camelids became extinct after the last ice age, perhaps due to climate change but more likely from overhunting by humans who were occupying the continent at that time. Dromedary camels were domesticated four thousand years ago in Arabia, while the Bactrians were independently domesticated five hundred years later in Central Asia. While primarily used for transport, they are also valued for milk, meat, hair, leather, and dung, which is dried and used for fuel. Although some wild Bactrian camels may still exist in remote regions such as China's western Xinjiang Province, most camels are domesticated or feral. Worldwide, camels are estimated at twenty million, 75 percent in North Africa (from Morocco to Somalia) and 25 percent in Asia (from Arabia to Mongolia), with twenty thousand in Europe and Australia.
Thanks for description - Animal life club