Pronghorn (Antilocapra americana) lives in open grasslands across North America. It feeds on grass and leaves. Its conservation status is Least Concern.
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A real field recording of the Pronghorn, made in the wild.
The pronghorn can sprint up to 55 mph (88.5 km/h), making it the fastest land mammal in the Americas. It is able to maintain 35 mph (56 km/h) for four miles, 42 mph (68 km/h) for one mile, and the top 55 mph for eight hundred metres, far longer than the brief bursts of native predators. Although slower than the African cheetah, its large windpipe, heart, blood volume, erythrocytes and lungs let it take in massive amounts of air, supporting sustained high speeds.
Each pronghorn horn consists of a slender, laterally flattened bone core that is permanently attached to the skull, while a keratinous sheath covers the core and is shed each year before being regrown. In males the sheath measures between 12½ and 43¼ cm, averaging about 25 cm, and bears a distinctive forward-pointing prong; females have much smaller, often barely visible sheaths. This annual renewal keeps the horns sharp and functional for display and combat.
Pronghorn eyes are exceptionally large, granting a 320° field of vision that nearly encircles the head, allowing detection of predators from almost any direction. The eye sockets sit high on the skull, a placement that further widens the visual sweep and reduces blind spots. This panoramic sight, combined with acute motion detection, is a key adaptation for a species that relies on speed to evade hunters.
When alarmed, it flashes white rump hair that releases a scent reminiscent of buttered popcorn. The pungent smell warns nearby conspecifics of danger through both sight and smell.
Researchers have recorded at least 13 distinct gaits in the species. One gait produces strides nearly 24 ft (7.3 m) long, propelling it across the prairie with remarkable efficiency.
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Across the vast, sun-scorched expanse of the American West, the pronghorn roams with an effortless elegance, its tawny coat blending seamlessly into the landscape as it bounds effortlessly on long, slender legs. With a gentle curiosity, it navigates the open grasslands, its large, dark eyes ever-vigilant for the predators that lurk in the shadows, its remarkable speed and agility allowing it to outrun even the swiftest of hunters. As it runs, the pronghorn's distinctive horns, a symphony of curved and pointed lines, seem to slice through the air with a quiet precision, a testament to the enduring beauty of this ancient, untamed creature.
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