Animals in Prehistory that May Have Been Intelligent
1Homocephalosaurus
2Pachycephalosaurus
3Stegoceras
4Prenocephale
5Alaskacephale
6Tylocephale
7Acrotholus
8Texacephale
9Foraminacephale
10Wannanosaurus
11Troodon
13Blunt-Snouted Dolphin
14Megalodon
15Woolly Mammoth
16Gigantopithecus
17Nimravus
18Velociraptor
19Tyrannosaurus
20Allosaurus
21Oviraptor
22Compsognathus
23Stegosaurus