The domestication of certain animal species makes a difference in different societies. The Major Five are: sheep, goat, cow, pig, and horse. The Minor Nine are: one- and two-humped camel, llama, donkey, reindeer, buffalo, yak, Bali cattle, and mithan. Others will follow many centuries later: the rabbit (in the Middle Ages) and laboratory mice and rats in the 20th century. It can therefore be said that the domestication of large mammals effectively ended by 2500 BC. By that time, all 148 candidate species had likely been tested countless times independently around the world, with the result that only 14 proved beneficially domesticatable.
