and welcome to a News Flash special report.

ROCKY: Dinosaur Tails: What are they good for?

BILL: Everywhere you go in Cretacia,

dinosaurs are swishing, squishing, slashing

or flashing their tails.

MAZU: But what's the true purpose

of a dinosaur's tail?

What's it really used for?

TINY: We sent Rocky

into the field with a big ol' Giganto Tail to find out.

BILL: Once we could get him out of the den.

Introducing my newest invention:

the Giganto...

(Clears throat)

I said, the Gigant...

(Panting)

A little help?

(Groaning)

MAZU: One scientific theory

is that big dinosaurs like Gigantosaurus

used their tails as a counterweight.

TINY: Yeah, if you had a head as big as Giganto's,

you'd need something hefty at the other end to balance.

BILL: Let's see how Rocky did using his new tail.

- Agh! - Oh!

BILL: Um...not so good.

TINY: For any of us.

MAZU: Another theory is that speedy dinosaurs

like velociraptors used their tails to help them quickly

change direction while running.

TINY: Could Rocky use his new tail like this?

Here goes!

Whoa-oh-oh!

BILL: Well, he sure changed direction a lot.

MAZU: Then Rocky tried using his tail for protection,

like us ankylosaurs do.

BILL: Let's roll the videotape

to see how well Rocky defended Rugo from the raptors.

TINY: Poor Rocky.

BILL: Poor Rugo.

MAZU: Fortunately, there was only one theory left to test:

that leaf-eating sauropods could use their tails for leverage

to reach up even higher into trees.

BILL: For this one, Rocky doesn't have to move.

He just has to sit!

TINY: Could he do it?

Whoa-oh-oh-ah!

MAZU: As far as tail experiments go,

it was not looking good out there for Rocky today.

ROCKY: But then I found my groove...

For hitting home runs!

TINY: Wow, look at it go!

ROCKY: And I can't think of a better use

for a tail than that!