This North American hoofed mammal is the
sole surviving member of the family Antilocapridae (order
Artiodactyla). It is also called the Prongbuck,
Pronghorned Antelope and American Antelope. It is not related
to the Old World antelopes. The slender, graceful, Pronghorn has a
deer-like body weighs between 90 and 125 pounds, and stands about 3 1/2
feet at the shoulder. It has large, protruding eyes and a white or buff,
4-inch tail.
The upper body and outside of the legs are
tan to brown. The cheeks, lower jaw, chest, belly, inner legs and rump
are usually white. The male has a broad, black band down the snout to a
black nose and black neck patch, together with black horns.
The newborns do not have an odor and
instinctively lie motionless for hours.
This is their main defense from predators such as bobcats, eagles and
coyotes.
Because Pronghorn inhabit open terrain,
they rely on defense mechanisms of speed and keen eyesight,; Pronghorn
can detect movement up to 4 miles away. When alerted to danger, they
contract their rump muscles causing their white rump hairs to stand on
end, which other Pronghorn may detect from 2 miles away. At the same
time, they exude a musky odor, which can be detected for more than a
mile.
Pronghorn cannot leap fences, like deer
can do, so fenced rangeland has hampered their migration and survival in
the past century.
This high-strung animal is active night
and day, combining alternate snatches of sleep with vigilant feeding.
Pronghorn are selective, opportunistic foragers. They feed on forbs,
shrubs, grasses, juniper, chamisa and sometimes cacti and domestic
crops. In winter, desert populations are said to favor Sagebrush.
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