Some of Australia's native omnivores are:
Monkeys are omnivores that live in the rainforest!!
Omnivores - sea turtles, blue crabs, flamingos all live in the in the Atlantic ocean
Bandicoots are a group of small to medium sized marsupial omnivores found in northern Australia and New Guinea where they live in rainforests. The desert bandicoot is an extinct bandicoot of the arid country in the center of Australia.
A manatee does.
Nearly all fox species are omnivores.
shark
fish
Opossums
the swamp people
Ducks are omnivores that reside on or about wetlands (swamps) and oceans.
the wet ones
birds and other animals