Talk:Megalania/@comment-2600:1008:B048:C79:5163:7F66:4B06:F346-20180811210816/@comment-33371592-20180820151023

Dinosaurs are definitely not reptiles. Modern birds look and behave nothing like true reptiles. Non avian dinosaurs were most likely warm blooded because they're built for active movement and (in the case of carnivores) hunting. Many theropods had feathers. They all filled the natural niches of modern mammals. Crocodiles, dinos and pterosaurs are archosaurs, the same way monotrems, marsupials and placentals are mammals