If you could bring back one dinosaur, which one would it be?

Dinosaur is a very dangerous reptile or animal with a very huge size. When I saw a movie based on dinosaur then I was afraid and think that If dinosaur may occur in the present time then they were dangerous for the existence of human beings on Earth. Several types of  dinosaurs are meat-eater so they were very dangerous for people if they existed on Earth in the present time.

I am not interested in back any dinosaur who were dangerous for common people across the world. I watch a movie Jurassic Park, which is based on dinosaur. This movie is just like a horror movie of dinosaur in which all people were struggling to save lives of millions of people. I was also afraid in watching movie Jurassic Park. I think that if dinosaur will come again on Earth then they will destroy the whole world.

Thus, I am not interested to back any type of dinosaur on Earth.