See M. E. Ensminger, Sheep and Wool Science (4th ed. 1970); N. D. May, The Anatomy of the Sheep (3d ed. 1970); publications of the U.S. Dept. of Agriculture.
Open upright woody shrub (Kalmia angustifolia) of the heath family. Growing 1–4 ft (0.3–1.2 m) high, it has glossy, leathery, evergreen leaves and showy pink to rose flowers. Like other Kalmia species (including mountain laurel) and other members of the heath family, it contains a poison (andromedotoxin). In northwestern North America, where these plants occur, livestock (especially sheep) that graze on nonfertile soils of abandoned pastures and meadows may ingest enough of the plant to become poisoned, potentially fatally.
Learn more about sheep laurel with a free trial on Britannica.com.
Ruminants (bovid genus Ovis) that have scent glands in the face and hind feet. Horns, if present, are more divergent than those of goats. Species range from 80 to 400 lb (35 to 180 kg). The coat of wild species consists of outer hair underlain by wool. Sheep graze in flocks, preferably on short, fine grasses and legumes. They have been domesticated from at least 5000 BC in the Middle East, Europe, and Central Asia. Most domesticated breeds produce fine wool; the few that produce only hair or coarse or long wool are generally raised for meat. The flesh of mature sheep is called mutton; that of immature sheep is called lamb.
Learn more about sheep with a free trial on Britannica.com.
![]()
Bighorn sheep (Ovis canadensis).
Learn more about bighorn with a free trial on Britannica.com.
Mountain range, southern Montana and northern Wyoming, U.S. It is a range of the northern Rocky Mountains extending 120 mi (193 km), rising abruptly 4,000–5,000 ft (1,200–1,500 m) above the Great Plains and Bighorn Basin. The highest summit is Wyoming's Cloud Peak, at 13,165 ft (4,013 m). Bighorn National Forest covers part of the range. On Medicine Mountain is the Medicine Wheel, a prehistoric stone-spoked circle 70 ft (20 m) in diameter.
Learn more about Bighorn Mountains with a free trial on Britannica.com.