Scavenging animal (5)
I believe the answer is:
hyena
'scavenging animal' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for hyena that I've seen before include "Nocturnal animal with hysterical laugh" , "Laughing carnivore" , "Carnivorous mammal" , "Scavenging animal" , "One laughs loud" .)