Nocturnal carnivore (5)
I believe the answer is:
hyena
'nocturnal carnivore' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for hyena that I've seen before include "Nocturnal animal with hysterical laugh" , "African carrion-feeder" , "Laughing carnivore" , "Wolf-like animal with cry like laughter" , "Dog-like carrion eater" .)