Bearlike Aussie beast (5)
I believe the answer is:
koala
'bearlike aussie beast' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for koala that I've seen before include "Aussie tree-climber" , "Aussie gum-chewer?" , "Arboreal marsupial" , "Marsupial "bear"" , "Australian animal" .)