I agree totally with Marks comments.
To that I'd add that dingoes are really an introduced species if we are being pedantic about it. As are the Aborigines. They (apparently) came to Australia at the same time about 30-40,000 years ago from Asia. Most of the animals here are marsupials. Which means that they are grass/leaf eaters. At worst they eat insects. Snakes, Crocodiles and Dingoes are the only 'Native' predators apart from birds/sharks etc. (I've probably forgotten something but I think thats right).
The average size of kangaroos, specifically the Macropus rufus or the red kangaroo, is 6-feet and 7-inches or 2 meters tall. In terms of weight an adult male can be as heavy as 200 pounds or 90 kilograms. Another common species is Macropus giganteus or the eastern grey kangaroo. This one is slightly smaller, which has an average height of 6-feet or 2 meters and an average weight of 145 pounds or 66 kilograms.
The third common species is Macropus fuliginosus or the western grey kangaroo. It is smaller than the previous two species, which only stands at an average of 4-feet and 3-inches or approximately 1.3 meters tall. It only weighs around 52.91 to 127.87 pounds or 24 to 58 kilograms.
A red kangaroo can reach speeds of over 35 miles (56 kilometers) an hour
Current populations stand around the 25 million mark
Average life expectancy is about 5 years. However some Roo's have been known to live up to 25 years
So you are talking about 25 million animals at 6 foot and 135pounds + (65kg) of pure, fat free, high protien, low cholesterol red meat hopping about the country without damaging the natural landscape (I'll avoid the crop damage issue for now) that is all but an untapped replenishable resourse.
And thats without going into the whole ferral camel thing again
Hmmmm.... New flavour maybe? Camel and chicken dog food............*
Comments? ideas?