Acinonyx jubatus (Schreber, 1775)

The cheetah (Acinonyx jubatus) is a large cat and the fastest land animal. It has a tawny to creamy white or pale buff fur that is marked with evenly spaced, solid black spots. The head is small and rounded, with a short snout and black tear-like facial streaks. It reaches 67–94 cm (26–37 in) at the shoulder, and the head-and-body length is between 1.1 and 1.5 m (3 ft 7 in and 4 ft 11 in). Adults weigh between 21 and 72 kg (46 and 159 lb). The cheetah is capable of running at 93 to 104 km/h (58 to 65 mph); it has evolved specialized adaptations for speed, including a light build, long thin legs and a long tail.

The vernacular name “cheetah” is derived from Hindustani Urdu: چیتا and Hindi: चीता (ćītā). This in turn comes from Sanskrit: चित्रय (Chitra-ya) meaning ‘variegated’, ‘adorned’ or ‘painted’. In the past, the cheetah was often called “hunting leopard” because they could be tamed and used for coursing. The generic name Acinonyx probably derives from the combination of two Greek words: ἁκινητος (akinitos) meaning ‘unmoved’ or ‘motionless’, and ὄνυξ (onyx) meaning ‘nail’ or ‘hoof’. A rough translation is “immobile nails”, a reference to the cheetah’s limited ability to retract its claws. A similar meaning can be obtained by the combination of the Greek prefix a– (implying a lack of) and κῑνέω (kīnéō) meaning ‘to move’ or ‘to set in motion’. The specific name jubatus is Latin for ‘crested, having a mane’.

In 1777, Johann Christian Daniel von Schreber described the cheetah based on a skin from the Cape of Good Hope and gave it the scientific name Felis jubatus. Joshua Brookes proposed the generic name Acinonyx in 1828. In 1917, Reginald Innes Pocock placed the cheetah in a subfamily of its own, Acinonychinae, given its striking morphological resemblance to the greyhound and significant deviation from typical felid features; the cheetah was classified in Felinae in later taxonomic revisions.

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