Fastest land animal (7)
I believe the answer is:
cheetah
'fastest land animal' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cheetah that I've seen before include "Fast cat - the ache (anag)" , "African native" , "Fast spotted wildcat - sounds dishonest" , "Swift, spotted feline" , "Fast-moving creature" .)