The real live fence
The dingo fence is a long fence that runs east to south-west along the eastern third of Australia. It takes a few twists and turns getting from point A to B and ends up being about 3 times as long as the great Wall of China.
It's job is to prevent dingoes and other "wild dogs' from infiltrating the wool producing regions of eastern Australia. It's actually pretty damn cool.
The majority of dingoes lack the organization skills required to produce wire cutters in any sort of quantity. Even then, the quality of said wire cutters would be expected to be poor. Therefore it is safe to say, that baring the unexpected rise of the Dingo Unity Coalition and it associated proletariat, them sheep on the other side are sittin' pretty.
Dingo Fence Links and Pics
A page for kids about dingoes and Australian animals
If you read french this is a great illustrated diary of an Australian tour. Amazing pics.
This organization advocates for the conservation of the beloved dingo. Its full of info on them. You can support thier organization by buying stuff.
A government page that has an indepth discussion of the different impacts people and animals have on the outback. Amazing maps as well.