Cheetah

The cheetah (Acinonyx jubatus) is a member of the cat family (Felidae) that is unique for making up in speed and stealth what it lacks in climbing abilities. As such, it is placed in its own genus, Acinonyx. It is the fastest of all land animals and can reach speeds between 112 kilometres per hour (70 mph) and 120 kilometres per hour (75 mph)[3] in short bursts up to 460 metres (500 yd), and has the ability to accelerate from 0 to 110 kilometres per hour (68 mph) in three seconds, faster than most supercars !!!

Ref: http://en.wikipedia.org/wiki/Cheetah