- Sheep or domestic sheep (Ovis aries) are domesticated, ruminant mammals typically kept as livestock. Although the term sheep can apply to other species in the genus Ovis, in everyday usage it almost always refers to domesticated sheep. Like all ruminants, sheep are members of the order Artiodactyla, the even-toed ungulates. Numbering a little over one billion, domestic sheep are also the most numerous species of sheep. An adult female is referred to as a ewe (/juː/), an intact male as a ram, occasionally a tup, a castrated male as a wether, and a young sheep as a lamb.
- Idealism (plato.standford.edu)
This entry discusses philosophical idealism as a movement chiefly in the eighteenth and nineteenth centuries, although anticipated by certain aspects of seventeenth century philosophy and continuing into the twentieth century.