Cat calls con artist (7)
I believe the answer is:
cheetah
'cat' is the definition.
(I know that cheetah is a type of cat)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for cheetah that I've seen before include "Very fast mammal" , "Fastest cat" , "Animal that's remarkably quick" , "Feline -- fastest land animal" , "quickie?" .)