Creatures carried by consumers going west (4)
I believe the answer is:
emus
'creatures' is the definition.
(emu is a kind of creature)
'carried by consumers going west' is the wordplay.
'carried by' indicates the answer is hidden within the clue.
'going west' shows that the letters should be reversed in order.
'sume' is hidden in the letters of 'consumers'.
'sume' in reverse letter order is 'EMUS'.
(Other definitions for emus that I've seen before include "laboratory units" , "Largest native Australian birds" , "Running birds" , "Aussie birds" , "Muse about flightless Australian birds" .)