kaboom!!!

And the dinosaurs are gone

It's mammal time! Here come the mammals, look at 'em. Now, they're gonna dominate the world, and one of them just learned how to grab stuff, and walk.

No, Not like that , like THAT

And grab stuff at the same time. And bang rocks together to make pointed rocks (Ouch!). And set things on fire (YOWCH!). And make crazy sounds with their voice.
CAVEMAN: Gneurshk.
Which can mean different things.
That's a human person!