Prehistoric Australia was home to some of the scariest creatures ever. Imagine running into a giant, meat-eating kangaroo or a massive, 20-foot-long crocodile! There were also huge birds called "demon ducks" that couldn't fly but could chase you down. And let's not forget the enormous lizards and snakes that roamed the land. It's safe to say that living in ancient Australia would have been like living in a real-life monster movie!

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