3. Majungasaurus
A close relative of Carnotaurus, Majungasaurus was native to modern-day Madagascar, a land already known for a decent bit of weird. Let’s start with the skull: Majungasaurus had a dome on its snout and a single horn on the top of its skull. That’s a little strange, but there’s more to this dinosaur than just the head.
If you thought this particular group of therapods couldn’t get weirder, Majungasaurus was a confirmed cannibal. While we can speculate that other dinosaurs ate their own kind, Majungasaurus fossils have been found with other Majungasaurus bones inside. The only other dinosaur that ate its own kind is Tyrannosaurus rex!