Walking.With.Dinosaurs.2025.S01E04.1080p.iP.WEB-DL.AAC2.0.HFR.H.264-RAWR Subtitles

00:00:17,480 --> 00:00:20,Over 66 million years ago...

00:00:22,440 --> 00:00:25,SCREECHING WAIL

00:00:25,080 --> 00:00:26,..our world...

00:00:25,080 --> 00:00:26,HIGH-PITCHED CLUCKS

00:00:26,960 --> 00:00:29,..was ruled...

00:00:26,960 --> 00:00:29,DEEP SNORT

00:00:30,640 --> 00:00:33,..by dinosaurs.

00:00:33,400 --> 00:00:35,DEEP BELLOW

00:00:35,040 --> 00:00:37,HISSES

00:00:39,640 --> 00:00:43,The largest animals that have
ever walked the Earth.

00:00:43,920 --> 00:00:46,ROARS

00:00:50,360 --> 00:00:54,Today, dinosaur experts
across the globe

00:00:54,960 --> 00:00:58,are uncovering the bones
they left behind...

00:01:02,880 --> 00:01:07,..allowing us to imagine how these
creatures may have lived...

00:01:13,600 --> 00:01:18,..so that we can tell
their stories, and they...

00:01:21,440 --> 00:01:23,..can walk again.

00:01:47,440 --> 00:01:48,Western Canada.

00:01:51,680 --> 00:01:56,Today, a majestic landscape
of snow-capped peaks...

00:01:57,720 --> 00:01:59,..turquoise lakes...

00:02:02,520 --> 00:02:04,..and mighty rivers...

00:02:06,120 --> 00:02:08,..that erode the ancient bedrock.

00:02:10,240 --> 00:02:13,The perfect conditions
for dinosaur-hunting.

00:02:19,840 --> 00:02:22,Here, on the banks of
Red Deer River...

00:02:23,880 --> 00:02:27,{\an8}..palaeontologists from
the University of Alberta...

00:02:29,040 --> 00:02:33,..are unearthing the final resting
place of a super-predator.

00:02:35,760 --> 00:02:39,Oh, wow. Yeah, that's really nice.

00:02:39,200 --> 00:02:42,- Looks like a toe claw.
- Wonderful find.

00:02:42,400 --> 00:02:47,Albertosaurus -
T-rex's deadly cousin.

00:02:50,320 --> 00:02:53,These are the remains of a teenager.

00:02:54,760 --> 00:02:57,The team calls her Rose.

00:02:58,240 --> 00:03:00,{\an8}Holy cow!

00:03:00,360 --> 00:03:01,{\an8}- Oh, wow.
- It keeps going.

00:03:03,160 --> 00:03:05,Inspired by their discoveries...

00:03:09,360 --> 00:03:11,..we can imagine her story.

00:03:26,000 --> 00:03:28,In the Late Cretaceous,

00:03:28,200 --> 00:03:33,North America is split in two
by a vast inland sea.

00:03:37,480 --> 00:03:42,On its western shores,
a sprawling expanse of dense forests

00:03:42,400 --> 00:03:44,and rugged coastlines.

00:03:47,320 --> 00:03:49,Laramidia.

00:03:50,520 --> 00:03:53,A land in crisis.

00:03:54,560 --> 00:03:59,Atmospheric changes have forced
temperatures down by two degrees.

00:04:01,560 --> 00:04:03,A seemingly small change,

00:04:03,760 --> 00:04:07,but enough to push the delicate
ecosystem out of balance.

00:04:09,360 --> 00:04:12,SQUAWKS

00:04:12,040 --> 00:04:13,SHRIEKING CRIES

00:04:16,440 --> 00:04:18,Food is scarce.

00:04:21,600 --> 00:04:23,Even...

00:04:24,640 --> 00:04:26,..for an apex predator.

00:04:26,000 --> 00:04:28,RUMBLING BREATHS

00:04:30,560 --> 00:04:33,Standing two-and-a-half metres tall,

00:04:33,480 --> 00:04:35,and weighing in at one tonne...

00:04:37,840 --> 00:04:41,..this is Rose...

00:04:41,440 --> 00:04:43,..the Albertosaurus.

00:04:47,520 --> 00:04:50,It's been a week
since she last ate.

00:04:55,480 --> 00:04:58,But in her sights...

00:04:58,080 --> 00:05:00,..an arrhinoceratops,

00:05:00,600 --> 00:05:02,an older cousin of triceratops.

00:05:08,760 --> 00:05:11,A chance for Rose
to satisfy her hunger.

00:05:25,200 --> 00:05:29,Rose might just be the fastest
land predator on the planet...

00:05:32,240 --> 00:05:35,..sprinting at up to 30mph.

00:05:44,240 --> 00:05:47,BELLOWS

00:05:47,240 --> 00:05:49,ROARS

00:05:54,200 --> 00:05:56,But Rose has miscalculated.

00:05:59,600 --> 00:06:03,At two tonnes, her target
is twice her weight...

00:06:04,560 --> 00:06:06,..with horns almost a metre long.

00:06:11,800 --> 00:06:13,Rose is starving.

00:06:22,120 --> 00:06:25,But the risk of injury
is just too great.

00:06:29,480 --> 00:06:31,Dinner will have to wait.

00:06:46,120 --> 00:06:49,71 million years later,

00:06:49,000 --> 00:06:51,this team of palaeontologists...

00:06:51,720 --> 00:06:54,- Hey, guys, how's it going?
- Hey, Mark, look at this.

00:06:54,720 --> 00:06:57,..led by Mark Powers,

00:06:57,520 --> 00:06:59,is uncovering Rose's secrets...

00:06:59,960 --> 00:07:03,- Found new bones!
- Whoa, no way!

00:07:04,080 --> 00:07:05,..piece by piece.

00:07:05,720 --> 00:07:07,You couldn't ask for better...

00:07:07,320 --> 00:07:10,- No.
- ..better separation.
- You really couldn't.

00:07:10,080 --> 00:07:13,Each day, more remains emerge
from the ground.

00:07:13,280 --> 00:07:15,- Ohh!
- Whoa!
- Oh, my God.

00:07:15,640 --> 00:07:17,Yeah! Yeah, clean it off.

00:07:17,320 --> 00:07:19,There it is!

00:07:17,320 --> 00:07:19,CHEERING

00:07:20,720 --> 00:07:24,Today's discovery -
Rose's leg bones.

00:07:24,720 --> 00:07:26,Oh, that's so cool.

00:07:31,640 --> 00:07:35,Each fossil is exposed and restored,

00:07:35,920 --> 00:07:40,allowing the team to delve deeper
into the story of

00:07:40,080 --> 00:07:42,this long-lost super-predator.

00:07:42,880 --> 00:07:45,This is looking really good.

00:07:45,160 --> 00:07:49,Mark works with limb specialist
Christiana Garros

00:07:49,560 --> 00:07:52,to examine the bones
from Rose's shin.

00:07:53,360 --> 00:07:55,The tibia is not actually that huge,

00:07:55,960 --> 00:07:58,- compared to some of the bigger
ones I've seen, at least.
- No.

00:07:58,760 --> 00:08:03,Albertosaurus is an older relative
of Tyrannosaurus Rex...

00:08:04,440 --> 00:08:06,- It's about 79cm.
- OK.

00:08:06,520 --> 00:08:07,Something like that.

00:08:07,800 --> 00:08:11,..but it's becoming clear
she was a very different beast

00:08:11,240 --> 00:08:12,to her more famous cousin.

00:08:12,800 --> 00:08:16,So, long limbs, but the ones of
T-rex are quite a bit bulkier,

00:08:16,720 --> 00:08:18,- aren't they?
- Absolutely.

00:08:18,320 --> 00:08:21,Rose kind of really embodies
what Albertosaurus is.

00:08:21,120 --> 00:08:24,It's a very legsy animal, especially
compared to things like T-rex,

00:08:24,360 --> 00:08:27,- which was incredibly huge.
- Yeah.
- Incredibly chunky.

00:08:27,600 --> 00:08:29,Quick, fast, dangerous.

00:08:29,640 --> 00:08:31,- Still has powerful jaws.
- Yeah.

00:08:31,240 --> 00:08:34,Maybe the optimal amount
of scary for my taste,

00:08:34,160 --> 00:08:36,- that's for sure.
- Absolutely.

00:08:37,440 --> 00:08:39,But speed was far from
the only weapon

00:08:39,920 --> 00:08:41,in the Albertosaurus arsenal.

00:08:49,000 --> 00:08:52,More bones are coming
out of the ground.

00:08:52,000 --> 00:08:53,Oh, that's bone.

00:08:53,600 --> 00:08:55,But these don't belong to Rose.

00:08:55,560 --> 00:08:58,It does look like a bone from
one of the digits.

00:08:58,640 --> 00:09:00,And that's definitely
Albertosaurus, right?

00:09:00,480 --> 00:09:01,Yeah, absolutely.

00:09:01,840 --> 00:09:06,And each bone seems to come from
a different-sized Albertosaurus.

00:09:06,160 --> 00:09:07,This is a huge one.

00:09:13,120 --> 00:09:15,Dinosaur hunters have discovered

00:09:15,000 --> 00:09:18,as many as 26 individuals
buried here.

00:09:21,000 --> 00:09:23,To try and say any piece belongs
to any one individual

00:09:23,680 --> 00:09:26,is kind of tough to do,
cos there are so many of them.

00:09:27,640 --> 00:09:30,It's clearly a mass grave
of Albertosaurus,

00:09:30,600 --> 00:09:33,where many individuals died
together in this spot.

00:09:35,360 --> 00:09:37,And if they died together...

00:09:39,360 --> 00:09:41,..they likely lived together, too.

00:09:56,000 --> 00:09:58,LOW GROWLING

00:10:06,320 --> 00:10:09,In the cave Rose calls home,

00:10:09,760 --> 00:10:11,she's far from alone.

00:10:13,000 --> 00:10:15,SNIFFS

00:10:15,480 --> 00:10:17,GRUNTS

00:10:24,600 --> 00:10:28,Albertosaurus are social animals.

00:10:32,000 --> 00:10:34,They live and hunt together,

00:10:34,560 --> 00:10:37,forming strong, intimate bonds.

00:10:48,520 --> 00:10:52,Rose has paired with this male
Albertosaurus the same age.

00:10:57,800 --> 00:11:00,A source of comfort...

00:11:00,600 --> 00:11:02,..in times of scarcity.

00:11:06,240 --> 00:11:10,It's been over a week since
the Albertosaurus last made a kill.

00:11:14,000 --> 00:11:18,And starvation isn't the only
threat hanging over Rose.

00:11:20,320 --> 00:11:23,RUMBLING GRUNT

00:11:27,720 --> 00:11:29,The matriarch.

00:11:34,040 -->...