In one study, forbs comprised 62% of their diet, shrubs 23%, and grasses 15%, while in another, cacti comprised 40%, grass 22%, forbs 20%, and shrubs 18%. The Pronghorn, like sheep and goats, has a gall bladder, and like giraffes, lacks dewclaws. The difference between the sheaths of the male and the female is that, the latter has smaller horns that are seldom pronged, and at times hardly visible. Males have a horn sheath about 12.5–43 cm (4.9–16.9 in) (average 25 cm (9.8 in)) long with a prong. Pronghorn Horn Pronghorn Skull This is because it has some strange resemblance to the old world antelopes. Female Pronghorn Antelope,. , The pronghorn has been observed to have at least 13 distinct gaits, including one reaching nearly 7.3 m (8.0 yd) per stride.  Before fighting, males try to intimidate each other. Anywhere, any time. Hence its name: pronghorn. Adult pronghorn have few natural predators, due to their incredible eyesight, although the young can be vulnerable to mountain lions, coyotes and even golden eagles. Since their ranges are sometimes affected by sheep ranchers' fences, they can be seen going under fences, sometimes at high speed.  It is the only surviving member of the family Antilocapridae.. Though not an antelope, it is often known colloquially in North America as the American antelope, prong buck, pronghorn antelope, prairie antelope, or simply antelope because it closely resembles the true antelopes of the Old World and fills a similar ecological niche due to parallel evolution. But his basic premise is that when females of species in the antelope family have horns, they did not evolve for purposes of defense for themselves or their offspring.  Three other genera (Capromeryx, Stockoceros and Tetrameryx) existed when humans entered North America but are now extinct.  A receptive female remains motionless, sniffs his scent gland, and then allows the male to mount her. Females usually bear within a few days of each other. Pronghorn also use smell to attract mates and signal danger. Clark was the first European to kill a pronghorn, and described his experience as follows:. The most noticeable characteristic of pronghorn is also the source of their common name. "Sampling" females visit several males and remain with each for a short time before switching to the next male at an increasing rate as estrous approaches. The females are the same height as males, but weigh 34–48 kg (75–106 lb). The horns extend straight up and then curve toward the rump. Ditch the disposables and make the switch to sustainable products. Pronghorn (noun) An American antelope (Antilocapra Americana), native of the plain near the Rocky Mountains. ), Animal Diversity Web, University of Michigan Museum of Zoology. ... NICE PRONGHORN ANTELOPE HORNS TAXIDERMY, MAN CAVE. In: Handbook of North American Indians, Volume 12: Plateau.  Some recent decline has occurred in a few localized populations, due to bluetongue disease which is spread from sheep, but the overall trend has been positive. Pronghorn “horns” are made of keratin sheathes that grow over a bone core, much as they do in true antelope. Males have a horn sheath about 12.5–43 cm (4.9–16.9 in) (average 25 cm (9.8 in)) long with a prong. , Pronghorns have a gestation period of 7–8 months, which is longer than is typical for North American ungulates. Both the sexes have forked horns. The fawns stay with their mother for about a year until they become independent. The pronghorn is a North American mammal more closely related to the giraffe than to similarly appearing true antelopes. The Mandans' mode of hunting them is to form a large, strong pen or fold, from which a fence made of bushes gradually widens on each side. Male pronghorn breed with multiple females within their territory. If they make it to the Upper Green River Valley, then the pronghorn will make the journey back north to greener pastures in April. However, female horns are underdeveloped or the growth is stunted. Threats to pronghorn include habitat loss, human-wildlife conflicts, and overexploitation due to historic hunting, which greatly reduced the population size. Pronghorn have white stripes on their necks and additional white markings on the face, stomach, and rump. If a pronghorn spots a predator, it raises the white rump hairs. Pronghorn are found only in North America. Both male and female have them, although the horns of the males’ are more pronounced. CS1 maint: multiple names: authors list (, Bromley, Peter T., and David W. Kitchen. The pronghorn has white markings on its chin, neck, and underbelly, in addition to long hairs on its rump. The National Wildlife Federation is providing resources to help families and caregivers across the country provide meaningful educational opportunities and safe outdoor experiences for children during these incredibly difficult times. The average male horns (larger photo) are approximately one foot in length.  As in the Giraffidae, skin covers the bony cores, but in the pronghorn, it develops into a keratinous sheath which is shed and regrown annually. Between the summer and winter, pronghorn migrate between feeding grounds to survive the harsh winter. , Game animals and shooting in North America. Pronghorns form mixed-sex herds in the winter. The name for this animal comes from the fact that it features two horns, with a prong type design. After they swallow food, it passes through the stomach and then the pronghorn regurgitates it. They also have a unique shape, because unlike other ungulates, a pronghornâs horns point backward. They seldom drink water because they receive most of their water from the plants they eat. Some have large scoops (like moose) and some have tines that are sharply branching. , Pronghorns have distinct white fur on their rumps, sides, breasts, bellies, and across their throats. Search, discover, and learn about wildlife. For three days, the herd is on the move, and sometimes the pronghorn have to travel under fences and near roads. Cougars, wolves, coyotes, and bobcats are major predators of pronghorns. Externally they look similar to African antelope, although they do differ from true antelope which have horns they don't shed. Dunc, did you spray directly on the horns, or wet a cloth and wipe it on? A. a. mexicana Both genders have these horns but they are considerably longer for the males. Although pronghorn are not as fast as cheetahs, they can maintain a fast speed for a longer period of time than cheetahs. Their body temperature is 38 °C (100 °F). 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