Farm animal seen in the west (3)
I believe the answer is:
ewe
'farm animal' is the definition.
(female sheep)
'in the west' is the wordplay.
'in' says the answer is hidden in the clue.
'EWE' can be found hidden inside 'the west'.
'seen' is the link.
(Other definitions for ewe that I've seen before include "Dam of a sheep" , "creature" , "Scottish loch" , "Lamb's dam" , "Female ovine" .)