mustang

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mustang

[Sp. mesteño=a stray], small feral horsehorse,
hoofed, herbivorous mammal now represented by a single extant genus, Equus. The term horse commonly refers only to the domestic Equus caballus and to the wild Przewalski's horse.
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 of the W United States. Mustangs are descended from escaped Native American horses, which in turn were descended from horses of North African blood, brought to the New World by the Spanish c.1500. Mustangs have evolved their own distinguishing traits: they are small, swift, hardy, and intelligent—well suited to plains conditions. As ranching expanded in North America, cowboys began rounding up mustangs for use as cow ponies. Hence, in the terminology of ranchers, mustang often refers to a cow pony of feral stock, and the term bronco is used for an untamed mustang. A cayuse (after the Cayuse of the NE United States) is a domestic Native American horse. Although the mustang, which has spent many generations in the wild, is somewhat different from the cayuse, the terms are sometimes used interchangeably. Cow ponies of mustang descent have been crossed with other breeds of horse, so that all horses of the W United States probably have mustang blood. The mustang, a variety of Equus caballus, is classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Mammalia, order Perissodactyla, family Equidae.

Mustang

 

a naturalized horse that was widespread on the prairies of North America. The local inhabitants—the Indians—hunted mustangs for meat and hides. In the 18th century the mustang population numbered 4 million. In the 20th century this figure has drastically declined to about 20,000 and continues to fall.

mustang

a small breed of horse, often wild or half wild, found in the southwestern US