Caught by crooks perhaps (5)
I believe the answer is:
sheep
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for sheep that I've seen before include "feature of 21/23 [NATIVITY SCENE]" , "Eg, a merino" , "Ruminant animal" , "Farm animals" , "Easily led people" .)