Harass an animal (6)
I believe the answer is:
badger
I believe this is a double definition.
'harass' is the first definition.
(I know that badger is a more specific form of bedevil)
'animal' is the second definition.
(I've seen this before)
'an' is the link.
(Other definitions for badger that I've seen before include "Black and white burrower" , "A mammal; harry" , "One tagging" , "protected species" , "Grab Ed from the animal" .)