Hog calls (5)
I believe the answer is:
oinks
'hog calls' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for oinks that I've seen before include "Beastly sounds" , "Piggy noises" , "High-pitched pig noises" , "Noises from pens" , "beastly noise" .)