cloudkiller's Journal: Killer Kangroos found in Australia

Ligers look out. Scientists have unearthed fossils suggesting the presence of "Killer Kangaroos" in the Australia. The article goes on to mention that evidence was also found of a "carnivorous, giant 10-foot-tall, 881-pound duck-like bird." The real question is what wins in a fight, a killer kangaroo, a giant duck, or a liger?