All language subtitles for Walking.With.Dinosaurs.2025.S01E01.1080p.iP.WEB-DL.AAC2.0.HFR.H.264-RAWR

Over 66 million years ago...

SCREECHING WAIL

..our world...

HIGH-PITCHED CLUCKS

..was ruled...

DEEP SNORT

..by dinosaurs...

DEEP BELLOW

HISSES

..the largest animals that
have ever walked the Earth.

Today, dinosaur experts
across the globe

are uncovering the bones
they left behind...

..allowing us to imagine how
these extraordinary creatures

may have lived...

..so that we can tell
their stories...

..and they...

..can walk again.

Eastern Montana.

A vast untamed wilderness...

..with extraordinary stories
to tell.

This is dinosaur country.

Here, a team from the North Carolina
Museum of Natural Sciences

is excavating an iconic species,

a triceratops.

Oh, sweet.

But this is no ancient giant.

But it's really small,
a very young individual.

Got a nice baby drake.

A phenomenal find.

The team calls her Clover.

Studying her bones,

we can begin to imagine
her world...

..and tell her story
for the first time.

At the end of the Cretaceous,

North America
is a vast expanse of green.

Where Montana is today,

there is a lush landscape
of sprawling subtropical forests...

..crisscrossed by waterways.

This is Laramidia...

..home to prehistoric giants...

THUDDING FOOTSTEPS

..and the occasional...

..not so giant.

TRILLING CALL

Meet Clover, the triceratops.

Barely half a metre tall,

she's the size of a large dog.

PANTS

Despite her size,
Clover roams the jungle alone.

These strange white objects
mean one thing.

Playtime.

SNUFFLES

But curiosity
can be a dangerous thing...

CROAKING CALL

..when you're living
in a land of monsters.

Clover is rare.

The vast majority of
triceratops fossils discovered

are from adults.

Clover's remains are a chance
to uncover the story

of a youngster...

..a once-in-a-lifetime
opportunity for team leader

Eric Lund.

- Check out these teeth.
- Oh, wow.

Clover's tiny jawbone has been
painstakingly reconstructed

by fossil restorer Nikki Simon.

Isn't she gorgeous?

She is gorgeous.
It's beautiful.

Don't often find
upper jaws this complete,

let alone
with all the teeth in 'em.

No wear on them.

The teeth's edges, for slicing
through plant material,

are still razor sharp.

- Check 'em out.
- Sure.

Oh, yeah.

These have barely been used.

They almost look carnivorous.

The teeth are a clue
to Clover's young age.

Look at how small
this upper arm bone is.

Yeah. Let's see

By measuring Clover's arm bone...

- A little over a foot.
- 34cm.

..they can more accurately
estimate how old she was.

She must only have been
about three years old.

Which means she was just a baby.

A baby...buried all alone.

Seems to be by herself.

Haven't found any adult bones
in this quarry.

Without the herd,
without her mother,

very vulnerable.

We'll never know
why Clover was alone.

What we do know is that
in the Late Cretaceous...

..young, solitary dinosaurs
don't last long.

WINGS FLAP

SQUAWKS

HISSES

An infernodrakon...

..a giant pterosaur, common
at the end of the Cretaceous.

With a five-metre wingspan,
it tries to intimidate Clover.

INFERNODRAKON HISSES

And then
there's the razor-sharp beak.

But Clover is nimble.

And this mother just wants
her egg back.

This time, the little
triceratops was lucky.

But danger lurks everywhere...

BELLOWING ROAR

..and it gets much, much bigger.

A mile from Clover's dig site...

..more fossilised remains
are emerging.

HAMMER TAPS

We've got a bone over here
that's very thin,

very slender and very long.

This looks like
one of the processes

off of the tail vertebrae,
and it helps lock the tail

into a much more rigid structure.

These thin bones
may once have formed

part of a thick, muscular tail
six metres long.

But this was no triceratops.

This is sort of
a meat-eating dinosaur feature.

Palaeontologist Ellis Mulready
holds the final clue.

It's a little bit beat up.

It's a really thick tooth,
designed for crushing bones.

It's got those kind of
drawn-together serrations.

You can still feel them.

I would love to meet the
creature that had this tooth,

but it'd be a bit scary!

Yeah.

THEY LAUGH

It's a tooth that can
only belong to one animal.

LOW, RUMBLING GROWL

SLOW FOOTSTEPS

LOW GROWL

Standing four metres tall...

..and weighing in at eight tonnes...

..Tyrannosaurus rex.

With 1.5-metre-long jaws,

the Earth's most infamous predator
could swallow Clover whole.

LOW GROWL

Fortunately, the hunter's
focus is elsewhere.

Padded feet act
like shock absorbers,

keeping its approach quiet.

For T-rex, a light snack.

GROWLS

PANTS

For Clover,
a terrifying first encounter.

And it won't be her last.

Up to 20,000 T-rex
roam Laramidia.

To survive,
Clover needs protection...

..and fast.

- You ready?
- Ready.

In the search for more clues,

Eric and evolutionary ecologist
John Kanipe

are heading deeper
into the wilderness.

So, you asked me
about snakes earlier.

Oh, yeah.

There's just a baby rattler
in the bottom there.

They want to understand who was
sharing the forest with Clover.

All right.
I'm ready when you are.

It's obvious from the evidence
on the ground...

Got a bit of bone here coming out.

..that Clover's world was
teeming with other dinosaurs.

Some bigger pieces.

Pretty busted up.

That's got a bit more surface.

One familiar species is
turning up more than any other.

Most of them belong
to triceratops.

Triceratops once dominated
this area.

They've been sitting on
the surface a really long time.

They're pretty weathered.

One fossil shows why
triceratops were so successful.

It's like a big brow horn.

Oh, man! It's a bit busted up.

You can still see where
all the blood vessels would be,

- even on the horn.
- Yeah.

In life, this horn would have
been over a metre long,

and behind it a protective bony
shield almost two metres wide.

Here was a creature
seemingly custom built

for fighting off large predators.

Got these big horns on the front of
your face, wave them around

and maybe make a T-rex think
twice before attacking you.

Triceratops' formidable
defences made it

one of the most successful
dinosaur species of its day...

..meaning an adult triceratops

would be the perfect protector
for Clover.

LOW GRUNTS

CLOVER YELPS

This old bull will do nicely.

CLOVER CALLS SOFTLY

LOW GRUNTS

But there's a problem.

Who needs a troublesome
youngster following you around?

CALLS SOFTLY

GRUNTS LOUDLY

TRILLING CALL

As another day ends...

..Clover is still alone...

..and darkness is setting in.

Eric thinks Clover may have had
good reason

to fear the night-time
most of all.

Back at base camp,
he uses a scan of a T-rex skull

to print a 3D model...

..of the killer's brain cavity.

This is the endocast of a T-rex.

For an animal that has a head
a metre and a half long,

not a real big brain - a dinosaur's
not doing calculus -

but it was enough to do
what the animal needed to do.

- It was very successful.
- Right.

It just needs to process
the information.

- Exactly.
- It's got a lot of
sensory input.

Though small
compared to a human's,

this brain is fine-tuned
for hunting.

We've got these really big
olfactory bulbs in the front.

- That's for smell.
- That's for smell, yeah.

T-rex probably had one
of the most sensitive noses

of any dinosaur.

It's probably picking up on
minuscule parts per million.

And it wasn't just
the killer's sense of smell

that was supercharged.

Here, in the middle,

would be the part of the brain
that controls vision.

T-rex does...really big eyes,
just like an owl,

that take in a lot of light.

These incredible senses
likely made T-rex

a lethal nocturnal hunter.

THUNDER RUMBLES

CREATURES CALL

As darkness descends...

..it's time to begin the hunt.

Locking on to a telltale scent...

SNUFFLES

..it seems that supper is nearby.

Whilst most creatures have
sought safe places to sleep...

..Clover is awake.

She must bulk up by a tonne

each year to reach full size,

so feeds often through the night.

In the darkness, she sees little...

..but T-rex sees her

perfectly.

GRUNTS

THUDDING

SNUFFLES

Saved by her size.

GRUNTS SOFTLY

Luck seems to be on Clover's side.

DISTANT GRUNTS

CLOVER GRUNTS

She survived a close encounter
with T-rex.

And from the sound of things...

HOOTING CALL

..a new ally may be close at hand.

LOW GRUNT

In the search for more giants,
the team is putting to the test

the very latest
fossil-hunting techniques.

A 66-million-year-old
treasure hunt

using 21st-century technology.

If we fly out towards
those badlands,

that would be a great spot.

BEEPING

The gyros stabilise.

Eric's teamed up with
palaeontologists Thomas Kaye...

Going for arm.

BEEP

..and Dr Michael Pittman.

Ready to launch.

Their prototype laser drone
scans the ground with UV light...

..searching for the telltale glow of
minerals within ancient fossils...

..to create a treasure map
of prehistoric remains.

See, here, we've got some specks.

Maybe the size
of a tennis ball.

Interesting but, you know,
we want the big stuff.

It's early days
for the technology,

and it has limitations.

But one spot on the ground...

Bang! Look at that.

..is glowing brightly.

- So that must be a really big piece.
- Yeah, that's big!

As dawn breaks,

Eric and Nikki head
into the badlands

to see this enormous fossil.

Look how big it is!

It's the lower leg bone
of a truly colossal dinosaur.

Seems to have been sitting out on
the surface for quite some time.

This is a big bone.

This animal would have been,
you know, maybe around

six, seven metres long.

But this is no triceratops.

It's not a T-rex either.

BELLOWING CALLS

Echoing through towering trees...

BELLOWING CALL

..the calls of perhaps the strangest
dinosaurs who roam here..

BELLOWS CONTINUE

..Edmontosaurs...

..herd animals known as
the cows of the Cretaceous.

Weighing over six tonnes,

these social creatures
tolerate Clover.

As a fellow plant-eater,
she's no threat to them.

The herd could give Clover
the protection she needs.

CHIRPS

And it's not just safety they offer.

A playmate.

ALL GRUNT AND CALL

In amongst these giants...

..Clover can begin to feel safe.

But danger is never far away.

HAMMER TAPS

66 million years ago,
T-rex ruled over these lands...

..the apex predator
for over two million years.

As it rolls over,
just get your hands under it.

The team wants to discover
how this fearsome hunter

took down its prey.

Inside this protective plaster coat

is the predator's leg bone.

Eric thinks there might be
more underneath.

One, two, three.

Protruding from the rock...

That's a bone.

..one of the giant's vertebrae.

Beautiful preservation.

It was a big, big animal.

It allows Eric to estimate more
accurately T-rex's full size.

On the order of 30 feet,
maybe more.

Ten metres, something like that.

They wrap their discoveries
in a protective plaster jacket.

It's just a tiny fraction
of T-rex's skeleton...

..but it's enormous.

This jacket's
probably about 150kg,

200lb, 300lb.

It's just so huge.

Alive, adult T-rex weighed
over eight tonnes,

but this enormous weight may
actually have been a hindrance.

Certainly not the 40mph Jeep-chasing
animal of Jurassic Park!

Their physiology just wouldn't
allow them to run that fast.

Probably speed walker.

T-rex probably couldn't run for fear
of breaking its own legs...

..with a top speed
of just 15mph or 20mph.

Not exactly slow, but a fast
human could outsprint one.

I think you could.

I think I'm going to take
a sharp turn,

and it's going to have
a hard time following me.

THEY LAUGH

You think we only just got

to be faster than him.

LAUGHTER

Maybe I'm a little overconfident!

So adult T-rex weren't
sprinting after their prey.

This killer relied
on another tactic...

..the element of surprise.

LOW GROWL

As Clover and the Edmontosaurs
sleep soundly...

..T-rex approaches slowly
from downwind.

But it's not easy being stealthy...

CRACK

..when you're the size of a bus.

BLEATS LOUDLY

ROARING

The Edmontosaurs
form a defensive line...

..rearing up on their hind legs

to appear as big as possible.

But holding your nerve isn't easy.

And it only takes
one of the herd to panic.

SQUEALS

CHOMPS

A lucky escape for Clover...

..not for her new friend.

CALLS SOFTLY

With the adult Edmontosaurs
on the move...

..Clover is alone once more.

Survival was a game of chance
in the Late Cretaceous,

and the odds were stacked against
young dinosaurs like Clover.

The team has tracked down
a remarkable fossil

with a chilling tale to tell.

That's the weirdest
baby bundle ever.

It may look like
a nondescript lump of rock

but its shape and texture
tell the experts

this is a coprolite -
fossilised faeces.

Eric works with fossil-restorer
Aubrey Knowles...

67.5 centimetres,
or 26.5 inches.

..to examine this prehistoric poo.

- This is a massive turd.
- It's a really big turd.

ERIC CHUCKLES

Most coprolites can't be attributed
to any specific species...

..but bone fragments
within the dino dung

reveal this was the waste product
of a meat-eater.

And then there's the matter of size.

So we're at 15.7 centimetres
across, or 6.2 inches.

That's a wide cloaca.

That is a very wide bumhole.

SHE LAUGHS

The only large-bodied
carnivorous dinosaur

that could have possibly
dropped this

would be a T-rex,

so very, very cool.

It's an astonishing fossil...

..the excrement of the most
notorious predator in history.

It's interesting
how many bones there are

preserved in the dropping.

By examining coprolites,

it's even possible to identify
the killer's victims.

T-rex faeces have been found
to contain bones

that are small and smooth.

That speaks to a more juvenile
or young prey.

The bones of babies.

Baby dinosaurs would be
very vulnerable.

Bite-sized.

- Energy is precious.
- Yeah.
- Go after easy prey.

Needing a quarter of a tonne
of meat a week

to sustain their enormous bulk,

baby dinosaurs like Clover
were a common meal for T-rex.

Nothing is off the menu.

Naive, defenceless

and small enough to swallow whole...

..Clover would make
an excellent snack.

SHRIEKS

GRUNTS

With nowhere to hide...

..it's a good time

to bump into an old acquaintance.

Few creatures can challenge T-rex,

but a full-grown triceratops
might be the only animal

that doesn't need to turn and run.

Who wins in a fight -
triceratops or T-rex?

The two giants were locked
in an evolutionary arms race,

adapted to battle each other.

But Eric thinks triceratops
may have had

a surprising trump card.

This fossilised fragment
was once part of the huge frill

extending from the back
of the skull,

but it wasn't solid bone.

All these vascular channels
on the surface,

all these pits and grooves
that are in it,

go all over the surface
of the frill.

This surface was covered
in a lot of blood vessels.

The blood flow suggests to Eric

a triceratops frill
was more than just a shield.

The idea is they could change the
colour pattern of their frill,

flash these different colours.

Pushing all this blood
up into its frill,

this would be a great way
to send a message.

It would have been
really intimidating.

BELLOWING ROAR

The giants are evenly matched.

Each weighs over eight tonnes.

Each with fearsome weaponry.

But triceratops plays
his trump card.

Flushing blood into his frill

creates huge colourful eye spots.

They make triceratops
seem even bigger.

But T-rex isn't apex predator
for nothing.

Stalemate.

But for T-rex, there's still
an easier meal close by.

Most young dinosaurs
never made it to adulthood,

and Clover was no exception.

But as the dig season draws
to a close...

..her exact cause of death
is still unknown.

You know, we're not sure
how baby Clover died.

In digging her bones up, we haven't
found any evidence of predation.

There doesn't seem to be
any injuries,

no bite marks,
things like that.

Up to this point,
it remains a mystery.

- Got it?
- All right.

But we do know one thing.

If Clover had died
as a meal for T-rex...

..there probably wouldn't be
any remains at all.

For Clover, it seems
as if time has run out.

But she still has one advantage -

her size.

With T-rex distracted...

..a moment of surprise.

Clover has survived her encounter

with history's most infamous killer.

For now, she's safe.

CALLS SOFTLY

GRUMBLING GRUNTS

And while this old bull may not seek
the company of a youngster...

..Clover's not giving up just yet.

We take the plunge

in the most dangerous river...

GRUNTS
CALLS

..in Earths' history...

..join the smallest member
of the biggest herd...

..on an epic journey...

..get up close with the deadliest
pack of predators...

..follow an island giant looking
for love...

..and meet the band of brothers
on the run

from a ferocious
and cunning adversary.

SQUAWKS