Feline showing revolutionary heat distribution (7)
I believe the answer is:
cheetah
'feline' is the definition.
(I know that cheetah is a type of big cat)
'revolutionary heat distribution' is the wordplay.
'revolutionary' becomes 'che' (Che Guevara the Marxist revolutionary).
'distribution' is an anagram indicator.
'heat' anagrammed gives 'etah'.
'che'+'etah'='CHEETAH'
'showing' acts as a link.
(Other definitions for cheetah that I've seen before include "Long-legged feline" , "Very fast mammal" , "Fast spotted wildcat - sounds dishonest" , "Fast cat - the ache (anag)" , "Swift-running cat" .)