How big was Australia's most famous extinct megafaunal mammal Diprotodon optatum? Be amazed by the answer and other cool Diprotodon facts. Just don't call Diprotodon a giant wombat!

Why is Australia's extinct kangaroo, Procoptodon goliah, called the T-rex of roos? Learn amazing facts about this giant kangaroo from the Pleistocene. Most importantly, please acknowledge that it was a real 'roo's roo'!