The cheetah (Acinonyx jubatus) is a large felid of the subfamily Felinae that occurs mainly in eastern and southern Africa and a few parts of Iran. It is the fastest land animal. The only extant member of the genus Acinonyx, the cheetah was formally described by Johann Christian Daniel von Schreber in 1775. The cheetah is characterised by a slender body, deep chest, spotted coat, small rounded head, black tear-like streaks on the face, long thin legs and long spotted tail. Its lightly built, slender form is in sharp contrast with the robust build of the big cats, making it more similar to the cougar. The cheetah reaches nearly at the shoulder, and weighs . Though taller than the leopard, it is notably smaller than the lion. Typically yellowish tan or rufous to greyish white, the coat is uniformly covered with nearly 2,000 solid black spots.