I'm sorry but, what? Australian? Are you talking about the accent of the voice actor that plays Mutt? Never noticed that before. Then again, I don't usually recognize accents. Heck, half the time I don't even realize there IS an accent. I deal with so many different types of people from all over the world. A lot of Indians especially (people native to India, NOT Native American's). Their accent is pretty recognizable. But other than Indians and some Nigerians, I don't normally even realize there's an accent.