The cheetah is a large-sized feline inhabiting most of Africa and parts of the Middle East. It is the only extant member of the genus Acinonyx. The cheetah can run faster than any other land animal as fast as 112 to 120 km/h (70 to 75 mph) in short bursts covering distances up to 500 m (1,600 ft), and has the ability to accelerate from 0 to over 100 km/h (62 mph) in three seconds. This cat is also notable for modifications in the species' paws. It is one of the few felids with semi-retractable claws. The word 'cheetah' is derived from the Sanskrit word citrakya, meaning 'variegated', via the Hindi '' (ct). The genus name, Acinonyx, means 'no-move-claw' in Greek, while the species name, jubatus, means 'maned' or 'crested' in Latin, a reference to the dorsal crest found in cheetah cubs. The cheetah has unusually low genetic variability. This is accompanied by a very low sperm count, motility, and deformed flagella.
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