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Sheep

Sheep are domesticated ruminant mammals, usually referring to the domestic sheep (*Ovis aries*), which are kept worldwide as livestock for wool, meat, and sometimes milk.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Sheep are domesticated ruminant mammals, usually referring to the domestic sheep (*Ovis aries*), which are kept worldwide as livestock for wool, meat, and sometimes milk. They belong to the genus *Ovis* and are closely related to goats and other wild sheep. Sheep were among the earliest animals domesticated by humans, likely in the Middle East and Asia about 9,000–11,000 years ago.

Taxonomy and classification

Sheep are ruminant mammals in the family Bovidae and subfamily Caprinae. In common usage, the term usually means the domestic sheep, *Ovis aries*, though it can also refer more broadly to members of the genus *Ovis*.

Domestication and history

Sources agree that sheep were among the first animals domesticated, with origins commonly placed in the Middle East and Asia thousands of years ago. Domestic sheep are generally considered to have been derived from wild sheep, especially the mouflon.

Uses and breeding

People have bred sheep for wool, meat, and sometimes milk for millennia. Selective breeding has produced many distinct domestic breeds adapted to different climates and production systems.

Distribution and ecology

Domestic sheep are found on every inhabited continent and in a wide range of climates, from arctic regions to tropical areas. As herbivores, they graze on grasses and other plants.

Key facts

  • Sheep are domesticated, even-toed ungulate mammals kept primarily as livestock.
  • Domestic sheep are usually identified as *Ovis aries*.
  • They are ruminants, meaning they digest plant material through a multi-chambered stomach.
  • Sheep have long been bred for wool, meat, and in some regions milk.
  • Sheep were among the earliest animals domesticated by humans.
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Canadian context

Sheep are part of Canadian agriculture, especially in wool and lamb production, and are also relevant to rural land management and livestock farming across several provinces.

Frequently asked questions

What is a sheep?
A sheep is a domesticated ruminant mammal, usually referring to the species *Ovis aries*.
What are sheep used for?
Sheep are raised mainly for wool, meat, and sometimes milk and hides.
Are sheep related to goats?
Yes. Sheep and goats are closely related and are both members of the subfamily Caprinae.
When were sheep domesticated?
Sheep were domesticated about 9,000 to 11,000 years ago.
What do sheep eat?
Sheep are herbivores that graze on grasses and other plants.

References

  1. Encyclopedia.comhttps://www.encyclopedia.com/plants-and-animals/animals/agriculture-animals/sheep
    Supports: Domestic sheep as ruminant livestock; taxonomy; domestication history; broad distribution.
  2. Wikipediahttps://en.wikipedia.org/wiki/Sheep
    Supports: General definition of sheep as domesticated ruminant mammals; genus and order.
  3. Merriam-Websterhttps://www.merriam-webster.com/dictionary/sheep
    Supports: Definition of sheep as genus *Ovis* and specifically *Ovis aries*.
  4. Oklahoma State Universityhttps://breeds.okstate.edu/sheep
    Supports: Origins from mouflon; early domestication; variety of breeds.
  5. Wikidatahttps://www.wikidata.org/wiki/Q7368
    Supports: Domestic sheep as domesticated ruminant bred for meat, wool, and milk.