Ecologists believe Australia’s 5,000 kilo meter ‘dingo fence’ is no longer the best defence for agriculture or the environment.

The belief came after researchers such as Biologist Dr David Paton, said the predator population on much of mainland Australia remained unbalanced.

A similar program conducted in the United State’s that returned wolves to the habitat created in Yellowstone National Park to reduce the numbers of deer saw astonishing environmental changes.