The fence is off and the night is dark,
Thunder Lizard’s free in Jussaric Park.
The humans are quiet, though not asleep–
They’re sitting motionless in the jeep.
Facts nervously whispered as water ripples:
“You know dinosaurs have no nipples.”

Important data in a certain context,
Yet sadly useless when talking T Rex.
If only they’d studied a little bit more
The physiology of tyrannosaur,
They’d have the knowledge to get away
And maybe avoid becoming prey.

Yet moving (or not) won’t help to stop it;
His vision is accurately stereoscopic.

He looks surprised

Stereosaurus Flex

This is the face my cat makes when I sneak up on her

I believe surprised Pikachu evolved from this.