One of the most amazing things about dinosaurs is that they're not only big, but bizarre.

And some of the most bizarre and interesting dinosaurs, were horned dinosaurs, like Triceratops.

Their heads are adorned with big, boney frills and spikes.

They've got horns over their eyes and over their nose.

We used to think that all horned dinosaurs had these horns so they could fight with Tyrannosaurs and other kinds of big predators.

But it turns out that's not the case.

If we look at animals today with horns, things like deer and antelope, they use them mostly to fight with each other and to show off.

If you look at the horn of Einiosaurus, curving forward, that wouldn't be very good fighting against a predator.

And we think, instead, that these animals used all this stuff to intimidate, to show off, and sometimes to fight.

So they would drop their heads, move them around, to see who's the biggest, and then if they needed to fight, they could lock horns together and have these wrestling contests to see who was strongest.

So Triceratops, Einiosaurus, all these animals are different.

Every species has a different set of bony bells and whistles on their head.

So, next time you go outside, think about putting on a fancy hat with big horns on it and think about just how scary you'd look.

- Hello, folks.

It's me, the Conductor.