Carnivorous animal (8)
I believe the answer is:
predator
'carnivorous animal' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for predator that I've seen before include "Animal that preys on others" , "One seeking victim" , "One preying on others" , "Animal that hunts others for food" , "Animal that feeds off others" .)