There are kangaroos and koalas and snakes all over Australia plus sharks and dolphins. Emus I think are mainly in the center, I have seen them near the South Australia / New South Wales border. Tasmanian devils live in Tasmania. Wombats of different species live in Victoria, New South Wales and Queensland not sure about any where else. Kookaburras and Sulphur Crested Cockatoos I think are in all states but certainly in Victoria, so are the Black Cockatoos. Crocodiles in the Northern Territory and Northern Queensland. Dingos in New South Wales and Northern Territory.
Hope this helps a bit.
Marg