How smart is a dinosaur? You had to expect at least what you'd get from a large animal.

Tony hadn't studied a lot of large animals. He wasn't an animal guy. Would it know when to run?

The dinosaur lumbered to its feet, roaring, massive head swinging until it fixed on Tony. Apparently it didn't, then; time for a more pointed lesson.

This time, he didn't launch himself out of the way. He let it come, let it prepare to bring the massive teeth crushing against the suit, and then just as Jarvis began to advise that maybe he'd like to get out of the way-

He let loose with the repulsors, hands and chest both, right down its mouth. It felt that, and made a noise less roar and more yelp, swinging away.

They studied each other, and then Tony took a couple of steps back. The dinosaur seemed to consider following; he saw it shift its weight. "Jarvis, fire up that collar."

It reconsidered. "Stay," said Tony (although it seemed more inclined to leave, now), as he turned to see if everyone was all right.