1. Dinosaurs lived on Earth for over 180 million years, from the Triassic period to the end of the Cretaceous period.
2. The largest dinosaur ever discovered was the Argentinosaurus, which could have been over 100 feet long.
3. Some dinosaurs were feathered, including the famous Velociraptor, challenging the traditional image of scaly reptiles.
4. The asteroid impact that wiped out the dinosaurs 66 million years ago also led to the rise of mammals, eventually paving the way for humans.
5. Dinosaurs weren't all huge! Many were small, like the Compsognathus, which was about the size of a chicken.