Paul Weston, Charles Sturt University et Theo Evans, The University of Western Australia
Wet and bulky cattle dung is very unlike marsupial dung that Australian dung beetles are adapted to deal with, meaning native dung beetles tend to leave it alone. But help from abroad is at hand.
Like reptiles, birds do not have two separate exits from the body. They have one, called the cloaca. It is quite similar to the human anus but the cloaca expels both indigestible bits and toxins.