Dinosaurs lived on earth 160 million years ago.

These animals were really enormous reptiles and some were as tall as a 6-story building.

And what's left of the dinosaurs? Just fossils, which are petrified bones and teeth. With these fossils, scientists were able to put together just how dinosaurs looked and how they moved. 

In movies like Jurassic Park we can get a good look at just how amazing these animals were. After the making of this movie, many artificial models of dinos were put up to give people a better idea of what these huge creatures were all about. 

A few days ago, some audience members from the show Wetten Dass!? could not believe what they were living. Three dinos (one of them a T-Rex) passed right in front of them. They were just machine models, but the audience was totally hypnotized by these huge lizards.