The dog fence is a state boundary, with QLD on the left & NSW on the right. The dog fence is maintained daily to keep dogs from the QLD side out of the NSW side, where sheep are grazed.
The 5,400 kilometre dog fence protects sheep industry from wild dogs and dingoes. The fence stretches across South Australia (SA) from the Great Australian Bight near Fowlers Bay, borders New South Wales and then turns north and east across Queensland to the Darling Downs.
The South Australian Dog Fence was established under the Dog Fence Act 1946 to stop dingoes migrating into land used for sheep production. Source The Dog Fence in South Australia – PIRSA