Fig. 151. — A group of Rocky Mountain sheep, or "big horns," Ovis canadensis, including males, females and young. (Photograph by E. Willis from specimens mounted by Prof. L. L. Dyche, University of Kansas.)

Title: Elementary zoology
Year: 1902 (1900s)
Authors: Kellogg, Vernon L. (Vernon Lyman Kellogg), 1867-1937
Subjects: Zoology
Source: https://commons.wikimedia.org/wiki/File:Elementary_zoology_(1902)_(21233675355).jpg

The bighorn sheep (Ovis canadensis) is a species of sheep native to North America named for its large horns. Bighorn sheep are named for the large, curved horns borne by the rams (males). Ewes (females) also have horns, but they are shorter with less curvature.