Jurassic Park featured some powerful dinosaurs like the T-rex. Jurassic World had new and engineered dinosaurs, which might be even more powerful.

Then there's the behind-the-scenes explanation: Director Steven Spielberg thought the visual of a T. rex rampaging ... out ...

Paleontologist Dave Hone rates the realism of the dinosaur attacks in the "Jurassic Park" and "Jurassic World" movies.