The tension rises. A T-Rex stomped into view. It reared its huge head and snarled, revealing steak-knife teeth. Tiny front claws slashed at the air, and a powerful tail smashed a tree, uprooting it.

“Great,” Rosa said, “you had to wish us into a time with a T-Rex!”

The T-Rex turned its head toward them.

“Um, we better go deeper in the cave.”

They pivoted, but the stony cave was shallow, with no passageways. It curved like a band-shell, wide open to the T-Rex.

It now was stalking toward them.

Rosa screamed. The sound echoed off the cave wall, filling the woods. The T-Rex paused, its little arms reaching up to plug its tiny ears.