Dingos were a particular problem with complaints dating to the 1830's with Shepherds continuously on guard on any flock. They were the bane of landowners and at Lanyon convicts were flogged if a dingo killed stock under their care.
From a post Lanyon Cemetery relating to 1837 -
'Oral tradition suggests that William Wright's was the first grave, and that the coffin had to be weighed down with large stones to protect it from attack by dingos (native dogs).
Some video I took on a walk up Simpson's Hill...
The Queenslander - 6 June 1929
National Library of Australia