Animal seen in police car (5)
I believe the answer is:
panda
This clue is a double definition.
'animal' is the first definition.
(I've seen this before)
'police car' is the second definition.
(I've seen this before)
'seen in' is the link.
(Other definitions for panda that I've seen before include "Black and white mammal" , "Raccoon-like animal" , "Black-eyed animal" , "See 11" , "See 17" .)