Lamb comes from domestic sheep, and sheep were first domesticated roughly 10,000 to 10,500 years ago in what is now southeastern Turkey and the broader Near East. That makes sheep one of the earliest animals humans ever brought under their care, trailing only dogs by a few thousand years. From that starting point, sheep spread across every inhabited continent, becoming one of the most important livestock animals in human history.
The Wild Ancestor Behind Every Lamb
Every domestic sheep alive today descends primarily from the Asiatic mouflon, a wild sheep recognized by its curved horns and reddish-brown coat. The mouflon’s natural range stretches from Turkey in the west to Pakistan in the east, mostly in mountainous terrain up to about 10,000 feet in elevation. Earlier theories suggested other wild sheep species as possible ancestors, but DNA analysis has confirmed the Asiatic mouflon as the main maternal source of all domestic breeds.
Where and When Domestication Happened
The shift from hunting wild sheep to managing herds began in southeastern Anatolia (modern Turkey) around 10,500 years ago. Archaeologists can track this transition by looking at changes in the age and size of sheep bones at ancient settlement sites. When people start selectively keeping animals rather than just hunting whatever they find, the bone record changes: the animals get smaller over generations, and the kill profiles skew toward young males while breeding females are kept alive longer.
One key site is Aşıklı Höyük in central Anatolia, where researchers have confirmed an independent center of sheep and goat domestication. This site sits well to the west of the classic “Fertile Crescent” as originally defined, suggesting that domestication wasn’t a single event in one valley. Instead, multiple communities across the region were independently figuring out how to manage sheep herds. Other important archaeological sites that document early sheep keeping include Çatalhöyük, Hallan Çemi, and Gritille, all in present-day Turkey.
Sheep appear to have been the first focus of the transition from hunting to herding in this region, with managed goats arriving slightly later, around 10,200 years ago. The domestication of these animals came roughly 1,000 years after people in the southern Levant had already begun cultivating crops, meaning early farmers added livestock to an existing agricultural way of life.
How Sheep Spread Across the World
Over the following millennia, sheep moved outward from the Near East along trade and migration routes into Europe, Africa, and Asia. The Eurasian Steppe, the vast grassland corridor stretching from Eastern Europe to Mongolia, played a major role. Agricultural civilizations and east-west commercial exchanges along this corridor shaped where sheep went and when.
DNA studies of ancient sheep remains have identified at least two major waves of migration into East Asia between roughly 6,800 and 4,500 years ago, driven by prehistoric trade. One route passed through what is now Uzbekistan and northwest China, reaching the Yellow River basin around 4,000 years ago. A second route followed the Altai mountain region into Inner Mongolia between about 4,400 and 2,500 years ago. Meanwhile, sheep reached Europe through the Mediterranean and overland through the Balkans, eventually arriving at sites like Franchthi Cave in southern Greece and Shillourokambos on Cyprus.
The Americas had no domestic sheep at all until 1493, when Christopher Columbus brought sheep on his second voyage across the Atlantic. These early imports were hair sheep from the Canary Islands, described by colonists as large, wool-less white ewes with horned rams. Spanish colonists later brought woolly breeds, and English settlers introduced their own varieties to North America in the 1600s.
From Wool to Meat: How Breeds Diverged
Early domestic sheep looked nothing like the plump, heavily fleeced animals most people picture today. The first herds were kept primarily for meat, milk, and hides. Wool as we know it developed gradually through selective breeding over thousands of years. Archaeological evidence from southern Spain suggests that people were already managing sheep for wool production as early as 5,000 years ago, based on skeletal remains showing that adult females were kept alive well past the age when they’d be slaughtered for meat alone.
The most famous wool breed, the Spanish Merino, has roots stretching back to the Roman era. Roman livestock practices in the Iberian Peninsula involved crossing the native dark-wooled Spanish sheep, which already had very fine fleece, with white-wooled sheep brought from the Atlas Mountains in North Africa. The goal was to produce animals with the finest possible white wool. The result, refined over centuries, became the Merino. Today, the Spanish Merino is considered the genetic ancestor of all contemporary Merino and Merino-derived breeds worldwide, and it reshaped the global wool trade from medieval Spain through colonial Australia and beyond.
Why “Lamb” and “Mutton” Are Different Words
English has two distinct words for sheep meat because of the Norman conquest of England in 1066. The Anglo-Saxon farmers who raised the animals kept using their Germanic word “lamb” for young sheep. The Norman French aristocracy who ate the meat used their word “moton,” borrowed from Old French and rooted in a Celtic term (*multo) meaning sheep. By around 1300, “mutton” had entered English specifically to mean the flesh of sheep served as food. The same Celtic root traveled into Italian as “montone.” This split between a Germanic farm word and a French table word mirrors other English meat pairs like cow/beef and pig/pork, all products of England’s bilingual medieval period.
The age distinction matters for the plate, too. Lamb refers to meat from sheep under one year old, which is tender with a milder flavor. Mutton comes from older animals and has a stronger, more developed taste. In much of the world, particularly South Asia, the Middle East, and parts of Europe, mutton remains the preferred cut. In the United States, Australia, and New Zealand, lamb dominates the market.