Beastly noise from kangaroo in Kalangadoo (4)
I believe the answer is:
oink
'beastly noise' is the definition.
(I've seen this before)
'from kangaroo in kalangadoo' is the wordplay.
'from' indicates a hidden word.
'OINK' can be found hidden inside 'kangaroo in kalangadoo'.
(Other definitions for oink that I've seen before include "farmyard noise" , "Pig's grunt" , "What farmer hears" , "Piggish noise" , "Swine sound" .)