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True horns are found mainly among: Ruminant artiodactyls. Antilocapridae ; Bovidae (cattle, goats, antelopes etc.). Giraffidae: Giraffids have a pair of skin covered bony bumps on their heads, called ossicones. Cervidae: Most deer have antlers, which are not true horns due to lacking a bone core and made of keratin.
In contrast to antlers, horns—found on pronghorns and bovids, such as sheep, goats, bison and cattle—are two-part structures that usually do not shed. A horn's interior of bone is covered by an exterior sheath made of keratin [7] (the same material as human fingernails and toenails). Antlers are usually found only on males.
Unlike horns which are more permanent, deer shed their antlers and grow new ones annually. Male reindeer, known as bulls, shed their antlers in November, just before Christmas, and grow them back ...
Most modern pecorans (with the exception of the Moschidae) have one of four types of cranial appendages: horns, antlers, ossicones, or pronghorns. [6] True horns have a bone core that is covered in a permanent sheath of keratin. They are indicative of Bovidae. Horns develop in the periosteum over the frontal bone, and can be curved or straight. [4]
Male antlers grow more branching points and measure anywhere between 39 inches and 53 inches in beam length, whereas female antlers only measure about 20 inches and generally have a simpler structure.
The horns also make the animals a prized game trophy, which has led to the near-extinction of the two northern species. As an introduced species Between 1969 and 1977, the New Mexico Department of Game and Fish in the US intentionally released 95 gemsbok into its state's White Sands Missile Range [ 16 ] and that population is now estimated ...
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Rhinoceros horns, unlike those of other horned mammals, consist only of keratin. These horns rest on the nasal ridge of the animal's skull. Antlers are unique to cervids and found mostly on males: the only cervid females with antlers are caribou and reindeer, whose antlers are normally smaller than males