Pronghorn antelope

Pronghorns are North American mammals similar in appearance and behaviour to Africa's antelopes. Pronghorns are built for speed and endurance and are the fastest known land mammal in America. With a sprinting speed of up to 100kmph and an ability to cruise for several kilometres at around 65kmph, they are not easy to catch. The young can run faster than a human two days after birth. An impressive population of 35 million once roamed the grasslands and deserts of America before European colonisation, when the population crashed to under 20,000. The hook and prong of the horn are unique to this species - hence the common name.

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