Queensland-based
yowie researcher
00:01
Dean Harrison and his team
00:03
are testing out
infrared cameras
00:04
at Springbrook National Park.
00:06
They picked this spot
because they believe
00:09
they've seen traces of
yowie activity among the brush.
00:11
And that night, they capture
this mysterious footage.
00:14
The thermal imagery seems
to show a solitary figure
00:18
hiding behind, or even hugging,
a large tree trunk.
00:21
[Harrison] This is doing
what yowies do.
00:25
They hug a tree,
00:27
pretend they're part of it
because of a human in the area.
00:29
They just blend. So it seems
he's putting his head in.
00:31
[Harris] Minutes later,
the image changes.
00:35
Now it looks like
there's a couple.
00:37
[Harrison] Two giant creatures
emerge from the foliage,
00:39
and one is bending down
to pick up something.
00:42
[Harris] As it bends over,
you can also make out
00:44
what looks like
one of the creatures' heads.
00:46
It looks cone-shaped.
00:49
The figures are large,
00:50
with wide shoulders
and ape-like proportions.
00:52
Field researcher
Cliff Barackman,
00:55
who has been to Australia
to study the yowie,
00:56
says the footage
aligns with descriptions
00:59
from indigenous peoples
going back centuries.
01:01
[Barackman] All the Aborigines
down there have drawings
01:04
on the walls of caves
depicting these things.
01:07
They're prevalent in their
storytelling traditions as well.
01:09
But then the settlers came
in the late 1700s,
01:13
and they, too,
started running into yowies.
01:16
Which is another
very strong indicator
01:20
that they're a real,
biological animal.
01:22
Now, Bigfoot-like creatures are
part of folklore the world over.
01:25
Nepal had the yeti,
Mongolia has the alma.
01:29
One theory is that
they all descended
01:32
from a single Asian ancestor,
01:34
some of whom
made it to Australia
01:36
while others crossed
the Bering Land Bridge,
01:38
came to North America,
and evolved into Bigfoot.
01:40
If this video is real,
it could help prove that theory.
01:43
But that's a big if.
01:47
There's some sort of subject,
creature, person, if you will.
01:53
It's something that's
emitting a heat signature.
01:57
And as we go through
different FLIR filter rays,
02:00
this object's movement
is consistent.
02:04
There's something happening
in here that's moving around.
02:06
[Harris] Look at the footage
with this filter.
02:09
Now the head comes
into better view.
02:12
It appears to have
a pronounced sagittal crest,
02:13
a ridge of bone
along the top of the cranium.
02:16
It's similar to what's seen
02:19
in the skulls of the early
hominid Australopithecus,
02:20
which some believe
to be the common ancestor
02:23
of Bigfoot, yowie,
and other similar creatures.
02:25
But Primeau is cautious.
02:28
Although we have not found
any evidence to support
02:30
that the recording
was fabricated,
02:32
we have no idea
what is being depicted here.
02:34
Next, our zoologist,
Roxy Furman,
02:38
analyzes the anatomy
of the figures.
02:40
What we can see clearly
at one point
02:43
is that there are
two animals pictured.
02:45
It also looks like
it's a bipedal animal,
02:47
which means
it walks on two legs.
02:51
[Harris] That might
have you thinking primate.
02:52
But here's a key fact:
02:55
there are no known primates
native to Australia.
02:56
In fact,
the only bipedal animals
03:00
are the cassowary
and the kangaroo,
03:02
which look nothing like this.
03:04
So how do we explain
the heat signatures
03:06
and those head shapes?
03:09
Furman thinks
she may have the answer:
03:11
People wearing headlamps.
03:13
That would explain why the
head's a slightly strange shape.
03:15
[Harris] That means the people
were misidentified
03:19
or participants
in an elaborate hoax,
03:21
maybe Australia's version
of The Patterson-Gimlin Film,
03:24
if that was a hoax, too.
03:27
But anthropologist Kathy Strain
says that in this case,
03:29
size does matter.
03:32
The research team went
back to the spot in daylight
03:33
and measured the tree,
03:36
matching the thermal footage
as best they could
03:37
to get a sense
of the size of the figures
03:39
in the infrared video.
03:41
[Strain] Whatever it is
is more than eight feet tall.
03:43
The possibility of them being
human is highly unlikely.
03:47
I came to the conclusion
that what this video shows
03:51
are two real yowie.
03:55
I think it is one of the most
significant films taken
03:57
in at least 50 years.
04:00
So yes, there's a possibility
that this is a hoax.
04:07
But based on
Professor Strain's estimate
04:10
of the creature's height,
04:13
we're going to say
these are possible yowies.
04:14
It's 2011 in a small
village in Russia.
04:16
A local farmer reports
that his home is shaken
04:19
by a large explosion nearby.
04:22
While looking for the source,
the farmer stumbles upon this--
04:24
some remains that look nothing
like the usual local wildlife.
04:28
Take a good look.
04:32
The creature has a strange
head and an even stranger torso
04:34
and limbs.
04:37
And the state its in
is even more puzzling.
04:38
It appears petrified.
04:41
The way this finding is
displayed in the video
04:42
is also quite intriguing.
04:45
What's very interesting
to me is that they're drying
04:46
some corn at the same time.
04:49
And I wouldn't think you'd
want to put something
04:51
alien next to a food resource.
04:54
TONY HARRIS: According to the
source who gave us this video,
04:56
the cause of the
explosion was never found.
04:59
But residents of
the town were more
05:02
frightened by what
this creature could
05:03
portend for their village.
05:05
Journalist Erin McCarthy
says local legends
05:07
could explain why.
05:10
In Slavic folklore,
there's Baba Yaga,
05:11
a witch who lives in the
woods, in a shack that has
05:13
chicken legs and chicken feet.
05:16
She also steals
and eats children.
05:19
TONY HARRIS: Baba
Yaga has become
05:22
the equivalent to the boogeyman
for kids in this region.
05:23
Some locals may have
believed, this creature
05:26
was her handiwork,
but McCarthy says
05:28
there could be another slightly
less creepy explanation.
05:30
Permafrost is
melting in Russia.
05:33
And with that melting, all
kinds of extinct creatures
05:35
are popping up like
mammoths and rhinos.
05:38
So potentially, this
creature is something
05:41
that's extinct that we
just don't know about yet.
05:44
Now, there are some conditions
on Earth that could instantly
05:48
mummify a living creature,
like the super alkaline waters
05:51
of Lake Natron in Tanzania.
05:55
But there's no evidence
something like that
05:57
currently exists in Russia.
05:59
So before we determine
if this video shows
06:01
an undiscovered dinosaur or
even a child-eating witch,
06:03
our experts will dig deeper.
06:08
First, video
forensic analyst Mick
06:14
West examines
whether the specimen
06:16
could be some kind of hoax.
06:18
I think the only way you
could have done that is
06:19
to have modeled it from life.
06:23
And that means that you
actually had the real thing
06:24
to start off with.
06:26
So I think the
simplest explanation
06:27
here is that what we're
seeing is what we're getting.
06:28
This is, in fact, a dead
animal that has been
06:31
partially or fully mummified.
06:34
TONY HARRIS: If this
is indeed some kind
06:36
of animal, what kind of animal?
06:38
Just in terms
of the morphology,
06:40
something about its face
looks quite birdlike to me.
06:42
It looks like it could
have part of the beak that
06:45
had formed off or
not been preserved
06:47
in this mummification process.
06:50
But it's got a really
big eye socket.
06:53
Birds tend to have
quite small eyes.
06:55
So for me, that would
kind of rule out a bird.
06:57
TONY HARRIS: That
Xes out it being
07:00
one of Baba Yaga's chickens.
07:01
Biologist Floyd Hayes
is thinking mammal.
07:03
FLOYD HAYES: OK, right
here, it looks like there
07:06
may be some teeth in the jaws.
07:08
To me, the skull looks
much more like a mammal.
07:10
It does look like
there may be a wing.
07:13
It could potentially
be a fruit bat.
07:15
There are some large species of
fruit bats called flying foxes.
07:19
TONY HARRIS: Furman sees
some merit in the bat theory.
07:23
They also do have
that similar large nose
07:26
that we can see in this fossil.
07:30
In terms of their skeleton, they
do have a long neck as well.
07:32
And going right to the end of
what looks like it could have
07:35
been wings, they have what
looks like it was a claw
07:38
or a hand of some sort.
07:41
TONY HARRIS: So it kind of
looks like a large fruit bat.
07:42
But here's the problem.
07:45
They don't live
up in Russia though.
07:46
They're more characteristic
of the tropical islands
07:48
in the Western Pacific
Ocean and Indian Ocean and
07:50
in Southeastern Asia.
07:53
TONY HARRIS: Floyd
says, until this family
07:55
comes forward with the specimen,
we can't be certain what it is.
07:57
The process of
mummification could
08:00
take a long period of time.
08:02
It's possible that this
is an extinct species
08:04
of animal that formerly
lived in Russia,
08:06
that is no longer there today.
08:09
So I know we're going
out on a limb here.
08:15
But for now, we're
going to say this is
08:18
an unidentified extinct animal.
08:21
Of course, it would take
proper scientific examination
08:23
to know for sure.
08:26
But with the Arctic
warming two times faster
08:27
than the global
average, we may see
08:29
more strange creatures thawing
out from the permafrost soon.
08:31
And we'll do our best
to identify them.
08:36
On a Friday evening
in 2008,
08:39
geology professor
Heinrich Frank
08:41
is homebound on the freeway
08:43
past the town of
Novo Hamburgo, Brazil.
08:45
Something catches his eye
at a construction site
08:48
on the side of the road.
08:51
Take a look.
08:52
The first tunnel I found
was very, very small.
08:54
And when I entered,
I see immediately
08:57
the claw marks on the walls.
09:01
(Host) Look closer.
09:03
Dr. Frank focuses on this,
09:04
grooves dug into
the tunnel walls
09:06
and slashes in the surface.
09:08
What could have
made these marks?
09:11
Dr. Frank's research
dates the caves
09:13
to be about 12,000 years old.
09:15
And there's reason to think
09:18
they aren't just natural
formations.
09:19
Taken a close look at them from
a scientific point of view,
09:21
they don't appear to be
natural caves
09:24
based on the types of rocks
that they're being cut in.
09:26
Some of these rocks
are much harder.
09:28
The easy rocks can be
broke by water.
09:29
They also have a really weird
shape,
09:32
that they're more horizontal
than they are vertical.
09:34
Which tells me that something
carved these tunnels out.
09:36
When you consider
all the megafauna,
09:40
you have only two animals
09:43
with the necessary claws
to build tunnels.
09:45
The armadillos
and the sloths.
09:48
(Host) We're talking now about
the Pleistocene era
09:50
which ended 11,700 years ago.
09:53
It was the age of megafauna,
09:56
gargantuan mammals
like mastodons,
09:58
and in this case perhaps
the famous giant sloth.
10:00
Could Frank have discovered
some sort of ancient burrow?
10:03
Or could such an animal,
believed to be extinct,
10:07
still be living there today?
10:09
(Frank) When you go inside
the tunnels,
10:10
sometimes you feel like the
animal
10:13
is on the next corner.
10:15
(Host) The fossil records show
that Megalonyx sloths
10:18
were the size of present day
bull elephants.
10:21
But throw in there massive claws
on each forearm
10:24
used for defense, they roamed
the Western Hemisphere
10:26
when humans first arrived.
10:29
One can only imagine how
terrifying it must have been
10:31
to try to hunt these giant
ground sloths.
10:34
In fact, there has been evidence
found of these
10:37
giant ground sloths,
the Mylodons,
10:40
that were actually trapped in a
cave in Argentina
10:42
and corralled and kept
as a food source
10:46
by primitive humans.
10:48
Giant sloths and humans
together?
10:51
If it sounds like something
out of a horror film
10:54
instead of history,
10:56
a recent find will
change your mind.
10:58
At White Sands in
New Mexico,
11:00
archeologists uncovered the
prints of a giant sloth
11:01
being followed by humans.
11:05
They were stalking it.
11:06
So could these giants
still be around?
11:08
Did they dig
the Brazilian tunnels?
11:10
And if not them,
then what did?
11:13
(Anderson) If you take a look at
the tops of the ceilings
11:19
in one of these caverns,
11:22
you'll see that they're--
look like claw marks.
11:24
(Host) So geologist Bob Anderson
thinks
11:26
some sort of burrowing creature
made these caves.
11:28
And what if these animals
still exist?
11:30
Archeologist Ed Barnhart
says not so fast.
11:33
Well, some people have
suggested
11:36
that these giant caves
are actually
11:38
the holes and burrows.
11:41
Well, that's an interesting
idea,
11:44
but show me the artifacts.
11:46
(Host) So far there's
no proof.
11:48
No one has captured
a giant sloth,
11:50
found a carcass or taken
a single picture of one.
11:52
So I can take giant sloth
right off the list.
11:54
(Host) And Barnhart even
questions if giant sloths
11:57
ever dug these tunnels
at all.
12:00
(Barnhart) Look down
in this section here.
12:02
There's one, one, one.
12:04
There's one coming
across here.
12:06
There is no reason to believe
that these are claw marks,
12:08
because they would be repeatedly
sections of three.
12:12
(Host) Barnhart makes
a good point.
12:16
But if a giant three-toed sloth
had uneven claws,
12:18
it might leave one, two
or three marks
12:21
depending on how hard
it was digging.
12:23
Still, Barnhart thinks it's
more likely
12:25
the marks were created by
an extinct worm-like creature
12:27
called a trilobite.
12:30
Some were predators.
12:31
The biggest weighed
as much as 10 pounds,
12:33
and they were known to burrow
into walls.
12:34
These are much more like
worm casts
12:37
that were into the wall.
12:40
Trilobites make more sense
to me
12:42
because those are individual
hot-dog-shaped things
12:44
that attach themselves to the
wall and dig in.
12:47
(Host) But hang on.
As you can see,
12:50
there are distinct differences
between these
12:53
confirmed trilobite tracks
12:54
and what we see in Dr. Frank's
tunnels?
12:56
Is this case really closed?
12:58
Okay. It's true that no giant
sloth fossils
13:04
have been found in Dr. Frank's
tunnels.
13:07
But the marks don't look exactly
like trilobite tracks either.
13:09
So we can't come down on one
side or the other.
13:13
We're calling this
an unexplained phenomenon
13:16
until we get further
proof.
13:18
[host] Tartu, Estonia.
13:21
October 2021.
13:22
Johan Hui Bapju receives
a disturbing phone call
13:24
from his mother
regarding her chicken coop.
13:27
He offers to take a look,
13:29
but nothing could prepare him
13:30
for what he found.
13:32
-[dramatic music]
-[unintelligible]
13:33
Oh, boy.
13:37
Their tail is really tangled.
13:38
[host] That's an understatement.
13:41
Let's take another look.
13:42
What looks
like a heap of black rats
13:44
is actually
a heap of black rats
13:47
with their tails
hopelessly entangled together.
13:48
There are 13 rats
in this bundle
13:52
bound together for life.
13:54
[McCarthy]
One of them, unfortunately,
13:56
looks like it has...
13:58
passed on to the next world.
13:59
And maybe that's for the best.
14:01
I wouldn't wanna be tied to...
14:03
a bunch of my brothers
and sisters either.
14:06
[host] Would you believe
that this isn't the first time
14:08
a knot of rats like this
has been discovered?
14:11
It's even got a name.
14:13
The Rat King.
14:15
The term Rat King is
14:17
thought to originate
14:19
from German.
14:20
It's a number of rats
14:21
whose tails have become
14:23
entangled so that they are
14:24
basically
like a rodent super organism.
14:26
An older wiser rat
14:29
would sit atop
a pile of younger rats
14:31
and they would serve
all of his needs.
14:35
Unfortunately for Rat Kings,
14:38
they are considered to be
14:40
bad omens.
14:41
It's thought
that they warn of the plague.
14:42
They're also associated with
witchcraft.
14:45
[host] Because of this,
in old Strasbourg
14:49
were Rat Kings were found,
14:51
they were usually
drowned in a well
14:52
or dumped in boiling water
14:54
before being brought
to the local school teacher
14:55
to study them.
14:57
Because of their
supernatural associations
14:58
and the rarity
of their occurrences,
15:00
there's debate
as to whether or not Rat Kings
15:02
are cruel man-made hoaxes.
15:05
[McCarthy]
There is a long history
15:07
of fabricating creatures
for profit.
15:09
Think about P. T. Barnum's
Fiji Mermaid,
15:12
George Hull's Cardiff Giant.
15:15
Back in the day,
15:18
people would take lizards
and glue bat wings on them
15:19
and say, "Here, buy a dragon."
15:22
Or they'd stick a narwhal horn
on a horse and say,
15:24
"This is a unicorn."
15:27
So, a hoax is definitely
15:28
not outside
the realm of possibility.
15:30
Knots are complicated.
15:34
There's
a whole area of mathematics
15:36
called Knot Theory
15:38
dedicated to studying
these things in the abstract.
15:39
And the knots of the Rat King
tails are complex too.
15:43
Scientist have attempted
to recreate them
15:46
and they quickly discovered it
was a lot harder than expected.
15:48
The knots they made looked
too neat and intentional.
15:51
And those rats were dead.
15:55
Let's turn to our experts
to see what they think
15:57
about this whole thing.
15:59
[suspenseful music]
16:01
[host] First, we turned
to biologist Floyd Hayes
16:04
to find out, is this real?
16:06
And, if so, how the heck does
something like this happen?
16:08
One possibility
is that it was faked
16:10
and somebody actually
stuck the tails together.
16:13
But it could also be
a natural phenomenon
16:17
and I think that's
most likely in this case.
16:19
It's been suggested that
perhaps they are stuck together
16:21
from birth,
but that seems very unlikely
16:24
because these
are fairly well grown
16:26
and they would likely
starve to death
16:28
if they were stuck together
for a few weeks.
16:30
[host] So, if they weren't
destined at birth
16:33
to become parts of a Rat King,
16:35
how do they form?
16:36
[Hayes] So a Rat King occurs
16:38
when the tails
are stuck together.
16:39
This usually happens
in black rats, which have
16:40
unusually long tails
16:42
compared
to other species of rats.
16:44
And it happens
mostly in cold countries
16:46
during the winter months.
16:49
And it is believed
that their tails
16:50
are frozen together overnight
16:52
when they're huddling together
for warmth
16:53
by water or urine
16:56
or sperm or food.
16:58
[host]
However, in a bizarre twist,
17:00
when we do some research
of our own, we find
17:02
that temperatures
in this area of Estonia
17:04
only had a low
of 36 degrees Fahrenheit
17:06
the night
before this Rat King was found.
17:08
Not cold enough to freeze.
17:11
And what's more, rats,
contrary to their reputation,
17:13
groom themselves
nearly as much as cats.
17:15
The idea that they
could get stuck together
17:18
with dirt and grime
seems unlikely.
17:19
So, we turn to wildlife
biologist Stephanie Schuttler.
17:22
She says the Rat King legend
carries a grain of truth.
17:24
Rats can be carriers of diseases
17:28
and parasites,
17:30
so, the fact that people
thought Rat Kings
17:32
were bad omens
17:35
or carriers
or signals of plague,
17:36
it's not
that unreasonable of a leap.
17:39
[host]
It might just be coincidence,
17:42
but the COVID-19 epidemic
was still ravaging Europe
17:44
when this video was shot.
17:47
And Schuttler says
17:48
there's another question
gnawing at her.
17:49
Why do these rats lie down
and accept their fates?
17:51
Why don't they fight back?
17:54
[Schuttler] When animals are
17:55
stuck or trying to escape
from something,
17:57
they can do things like...
18:00
chew their own appendage off.
18:02
Like, this has happened
18:04
in leg traps
18:05
with animals
like coyotes or wolves.
18:07
Why aren't these rats
18:09
chewing their own tails off
to get away?
18:11
Our verdict?
18:17
It seems
like Rat Kings form naturally,
18:18
but what we don't know
is the why of it all.
18:21
Why aren't there more Rat Kings?
18:24
And why don't these rats
make more of an effort
18:26
to escape?
18:28
It remains
an unexplained mystery.
18:29
Eisenhower State
Park, Texas 2015.
18:33
One morning after some
record-setting rain,
18:37
a few rangers are checking
the park's back roads
18:39
when they discover this.
18:42
KEN GERHARD: It's pretty gross
and weird and disgusting.
18:44
SHOW HOST: At first
glance, it almost looks
18:48
like patties of ground beef,
oddly arranged straight
18:49
down the middle of the road.
18:52
But look closer.
18:53
Is that one wiggling?
18:55
KEN GERHARD: They look to be
giant masses of earthworms
18:57
or annelids, segmented worms.
19:01
I've honestly never
heard of any type
19:03
of behavior like this before.
19:06
SHOW HOST: So what
are these worms doing?
19:08
And why?
19:10
Since we couldn't ask them,
Gerhard got to theorizing.
19:11
One interesting
possibility is that we're
19:15
looking at a spontaneous
attempt at evolution.
19:16
These worms are attempting
to build a superorganism.
19:19
SHOW HOST: And
these worms wouldn't
19:25
be the first to try it.
19:26
KEN GERHARD: One example would
be something called a tunicate.
19:27
This is a very primitive
type of vertebrate
19:31
that will actually join together
and form a massive chain
19:34
tens of feet long.
19:38
And there is an advantage to
this in terms of locomotion
19:39
through the water.
19:43
SHOW HOST: Social insects
can do something similar,
19:44
creating a group of
synergetic organisms
19:46
known as a superorganism.
19:49
KEN GERHARD: In times
of heavy flooding,
19:51
you'll often see
these complete islands
19:53
of ants that join together.
19:55
It's kind of a survival
mode where these animals
19:57
are able to collaborate
in order to survive
20:00
an extreme situation.
20:03
SHOW HOST: And who
could forget bees,
20:05
one of the better
known superorganisms
20:07
and the source of inspiration
for the term "hive mind."
20:09
Perhaps these worms are
exhibiting just that.
20:12
I think this is a great
example of a very primitive
20:15
life form, a worm,
demonstrating that perhaps it
20:18
has a level of conscious
collective intelligence
20:21
that is greatly underestimated.
20:25
Some scientists are
starting to believe
20:28
that the complex brains
that you and I have
20:30
could have evolved from
the very first worms.
20:33
So does that make worms
smart or humans dumb?
20:35
We'll let you make the call.
20:39
As for these worm
balls, we'll rely
20:40
on the brains of our experts.
20:43
Wow.
20:48
SHOW HOST: First, Dr.
Floyd Hayes considers
20:49
the superorganism theory.
20:51
FLOYD HAYES: Worms
could detect each other
20:52
through olfactory cues.
20:54
And they are attracted to
larger groups of worms.
20:55
So they like to socialize
for some reason.
20:58
SHOW HOST: While the worms
do socialize to some degree,
21:02
Hayes notes that true
superorganisms are eusocial.
21:04
They have designated
individuals that reproduce,
21:07
and others that don't.
21:11
And they have a
very complex society.
21:12
These worms are not examples
of eusocial animals,
21:14
so I would not classify
them as a superorganism.
21:18
SHOW HOST: OK, if superorganism
isn't the right word, what is?
21:21
It's hard to understand
why exactly they're gathered
21:24
together in the road there.
21:27
It may be drying
up a little bit.
21:28
And one potential benefit
of grouping together
21:30
would be that they
could stay more humid
21:32
for a longer period of time.
21:34
SHOW HOST: Dr. Hayes brings
up an important point.
21:36
Worms need moisture to live.
21:38
The mucus on a worm's skin
actually acts as a medium
21:40
for oxygen absorption, meaning
that in order to breathe,
21:43
the worm cannot dry out.
21:46
That's what makes the strange
alignment of these worm balls
21:48
the biggest mystery of all.
21:51
STEPHANIE SCHUTTLER:
It's really strange
21:52
that the worms seem to
congregate in the center
21:53
of the road, almost perfectly.
21:58
It is probably the
driest part of the road.
22:00
Roads are designed to
mound in the center
22:02
so that water can
go off the road.
22:06
SHOW HOST: It's not adding up.
22:09
If worms need moisture to live,
why gather at the driest place
22:10
available?
22:13
So, folks, we're stumped.
22:19
While it's not unnatural for
animals to herd together,
22:21
this peculiar behavior
is leading us to call
22:24
this an unexplained phenomenon.
22:27
In the end, Darwin concluded
that despite their small size,
22:29
worms are just as
capable of shaping
22:33
the landscape as any person.
22:35
Lyrics & Translation
[English]
Queensland-based
yowie researcher
Dean Harrison and his team
are testing out
infrared cameras
at Springbrook National Park.
They picked this spot
because they believe
they've seen traces of
yowie activity among the brush.
And that night, they capture
this mysterious footage.
The thermal imagery seems
to show a solitary figure
hiding behind, or even hugging,
a large tree trunk.
[Harrison] This is doing
what yowies do.
They hug a tree,
pretend they're part of it
because of a human in the area.
They just blend. So it seems
he's putting his head in.
[Harris] Minutes later,
the image changes.
Now it looks like
there's a couple.
[Harrison] Two giant creatures
emerge from the foliage,
and one is bending down
to pick up something.
[Harris] As it bends over,
you can also make out
what looks like
one of the creatures' heads.
It looks cone-shaped.
The figures are large,
with wide shoulders
and ape-like proportions.
Field researcher
Cliff Barackman,
who has been to Australia
to study the yowie,
says the footage
aligns with descriptions
from indigenous peoples
going back centuries.
[Barackman] All the Aborigines
down there have drawings
on the walls of caves
depicting these things.
They're prevalent in their
storytelling traditions as well.
But then the settlers came
in the late 1700s,
and they, too,
started running into yowies.
Which is another
very strong indicator
that they're a real,
biological animal.
Now, Bigfoot-like creatures are
part of folklore the world over.
Nepal had the yeti,
Mongolia has the alma.
One theory is that
they all descended
from a single Asian ancestor,
some of whom
made it to Australia
while others crossed
the Bering Land Bridge,
came to North America,
and evolved into Bigfoot.
If this video is real,
it could help prove that theory.
But that's a big if.
There's some sort of subject,
creature, person, if you will.
It's something that's
emitting a heat signature.
And as we go through
different FLIR filter rays,
this object's movement
is consistent.
There's something happening
in here that's moving around.
[Harris] Look at the footage
with this filter.
Now the head comes
into better view.
It appears to have
a pronounced sagittal crest,
a ridge of bone
along the top of the cranium.
It's similar to what's seen
in the skulls of the early
hominid Australopithecus,
which some believe
to be the common ancestor
of Bigfoot, yowie,
and other similar creatures.
But Primeau is cautious.
Although we have not found
any evidence to support
that the recording
was fabricated,
we have no idea
what is being depicted here.
Next, our zoologist,
Roxy Furman,
analyzes the anatomy
of the figures.
What we can see clearly
at one point
is that there are
two animals pictured.
It also looks like
it's a bipedal animal,
which means
it walks on two legs.
[Harris] That might
have you thinking primate.
But here's a key fact:
there are no known primates
native to Australia.
In fact,
the only bipedal animals
are the cassowary
and the kangaroo,
which look nothing like this.
So how do we explain
the heat signatures
and those head shapes?
Furman thinks
she may have the answer:
People wearing headlamps.
That would explain why the
head's a slightly strange shape.
[Harris] That means the people
were misidentified
or participants
in an elaborate hoax,
maybe Australia's version
of The Patterson-Gimlin Film,
if that was a hoax, too.
But anthropologist Kathy Strain
says that in this case,
size does matter.
The research team went
back to the spot in daylight
and measured the tree,
matching the thermal footage
as best they could
to get a sense
of the size of the figures
in the infrared video.
[Strain] Whatever it is
is more than eight feet tall.
The possibility of them being
human is highly unlikely.
I came to the conclusion
that what this video shows
are two real yowie.
I think it is one of the most
significant films taken
in at least 50 years.
So yes, there's a possibility
that this is a hoax.
But based on
Professor Strain's estimate
of the creature's height,
we're going to say
these are possible yowies.
It's 2011 in a small
village in Russia.
A local farmer reports
that his home is shaken
by a large explosion nearby.
While looking for the source,
the farmer stumbles upon this--
some remains that look nothing
like the usual local wildlife.
Take a good look.
The creature has a strange
head and an even stranger torso
and limbs.
And the state its in
is even more puzzling.
It appears petrified.
The way this finding is
displayed in the video
is also quite intriguing.
What's very interesting
to me is that they're drying
some corn at the same time.
And I wouldn't think you'd
want to put something
alien next to a food resource.
TONY HARRIS: According to the
source who gave us this video,
the cause of the
explosion was never found.
But residents of
the town were more
frightened by what
this creature could
portend for their village.
Journalist Erin McCarthy
says local legends
could explain why.
In Slavic folklore,
there's Baba Yaga,
a witch who lives in the
woods, in a shack that has
chicken legs and chicken feet.
She also steals
and eats children.
TONY HARRIS: Baba
Yaga has become
the equivalent to the boogeyman
for kids in this region.
Some locals may have
believed, this creature
was her handiwork,
but McCarthy says
there could be another slightly
less creepy explanation.
Permafrost is
melting in Russia.
And with that melting, all
kinds of extinct creatures
are popping up like
mammoths and rhinos.
So potentially, this
creature is something
that's extinct that we
just don't know about yet.
Now, there are some conditions
on Earth that could instantly
mummify a living creature,
like the super alkaline waters
of Lake Natron in Tanzania.
But there's no evidence
something like that
currently exists in Russia.
So before we determine
if this video shows
an undiscovered dinosaur or
even a child-eating witch,
our experts will dig deeper.
First, video
forensic analyst Mick
West examines
whether the specimen
could be some kind of hoax.
I think the only way you
could have done that is
to have modeled it from life.
And that means that you
actually had the real thing
to start off with.
So I think the
simplest explanation
here is that what we're
seeing is what we're getting.
This is, in fact, a dead
animal that has been
partially or fully mummified.
TONY HARRIS: If this
is indeed some kind
of animal, what kind of animal?
Just in terms
of the morphology,
something about its face
looks quite birdlike to me.
It looks like it could
have part of the beak that
had formed off or
not been preserved
in this mummification process.
But it's got a really
big eye socket.
Birds tend to have
quite small eyes.
So for me, that would
kind of rule out a bird.
TONY HARRIS: That
Xes out it being
one of Baba Yaga's chickens.
Biologist Floyd Hayes
is thinking mammal.
FLOYD HAYES: OK, right
here, it looks like there
may be some teeth in the jaws.
To me, the skull looks
much more like a mammal.
It does look like
there may be a wing.
It could potentially
be a fruit bat.
There are some large species of
fruit bats called flying foxes.
TONY HARRIS: Furman sees
some merit in the bat theory.
They also do have
that similar large nose
that we can see in this fossil.
In terms of their skeleton, they
do have a long neck as well.
And going right to the end of
what looks like it could have
been wings, they have what
looks like it was a claw
or a hand of some sort.
TONY HARRIS: So it kind of
looks like a large fruit bat.
But here's the problem.
They don't live
up in Russia though.
They're more characteristic
of the tropical islands
in the Western Pacific
Ocean and Indian Ocean and
in Southeastern Asia.
TONY HARRIS: Floyd
says, until this family
comes forward with the specimen,
we can't be certain what it is.
The process of
mummification could
take a long period of time.
It's possible that this
is an extinct species
of animal that formerly
lived in Russia,
that is no longer there today.
So I know we're going
out on a limb here.
But for now, we're
going to say this is
an unidentified extinct animal.
Of course, it would take
proper scientific examination
to know for sure.
But with the Arctic
warming two times faster
than the global
average, we may see
more strange creatures thawing
out from the permafrost soon.
And we'll do our best
to identify them.
On a Friday evening
in 2008,
geology professor
Heinrich Frank
is homebound on the freeway
past the town of
Novo Hamburgo, Brazil.
Something catches his eye
at a construction site
on the side of the road.
Take a look.
The first tunnel I found
was very, very small.
And when I entered,
I see immediately
the claw marks on the walls.
(Host) Look closer.
Dr. Frank focuses on this,
grooves dug into
the tunnel walls
and slashes in the surface.
What could have
made these marks?
Dr. Frank's research
dates the caves
to be about 12,000 years old.
And there's reason to think
they aren't just natural
formations.
Taken a close look at them from
a scientific point of view,
they don't appear to be
natural caves
based on the types of rocks
that they're being cut in.
Some of these rocks
are much harder.
The easy rocks can be
broke by water.
They also have a really weird
shape,
that they're more horizontal
than they are vertical.
Which tells me that something
carved these tunnels out.
When you consider
all the megafauna,
you have only two animals
with the necessary claws
to build tunnels.
The armadillos
and the sloths.
(Host) We're talking now about
the Pleistocene era
which ended 11,700 years ago.
It was the age of megafauna,
gargantuan mammals
like mastodons,
and in this case perhaps
the famous giant sloth.
Could Frank have discovered
some sort of ancient burrow?
Or could such an animal,
believed to be extinct,
still be living there today?
(Frank) When you go inside
the tunnels,
sometimes you feel like the
animal
is on the next corner.
(Host) The fossil records show
that Megalonyx sloths
were the size of present day
bull elephants.
But throw in there massive claws
on each forearm
used for defense, they roamed
the Western Hemisphere
when humans first arrived.
One can only imagine how
terrifying it must have been
to try to hunt these giant
ground sloths.
In fact, there has been evidence
found of these
giant ground sloths,
the Mylodons,
that were actually trapped in a
cave in Argentina
and corralled and kept
as a food source
by primitive humans.
Giant sloths and humans
together?
If it sounds like something
out of a horror film
instead of history,
a recent find will
change your mind.
At White Sands in
New Mexico,
archeologists uncovered the
prints of a giant sloth
being followed by humans.
They were stalking it.
So could these giants
still be around?
Did they dig
the Brazilian tunnels?
And if not them,
then what did?
(Anderson) If you take a look at
the tops of the ceilings
in one of these caverns,
you'll see that they're--
look like claw marks.
(Host) So geologist Bob Anderson
thinks
some sort of burrowing creature
made these caves.
And what if these animals
still exist?
Archeologist Ed Barnhart
says not so fast.
Well, some people have
suggested
that these giant caves
are actually
the holes and burrows.
Well, that's an interesting
idea,
but show me the artifacts.
(Host) So far there's
no proof.
No one has captured
a giant sloth,
found a carcass or taken
a single picture of one.
So I can take giant sloth
right off the list.
(Host) And Barnhart even
questions if giant sloths
ever dug these tunnels
at all.
(Barnhart) Look down
in this section here.
There's one, one, one.
There's one coming
across here.
There is no reason to believe
that these are claw marks,
because they would be repeatedly
sections of three.
(Host) Barnhart makes
a good point.
But if a giant three-toed sloth
had uneven claws,
it might leave one, two
or three marks
depending on how hard
it was digging.
Still, Barnhart thinks it's
more likely
the marks were created by
an extinct worm-like creature
called a trilobite.
Some were predators.
The biggest weighed
as much as 10 pounds,
and they were known to burrow
into walls.
These are much more like
worm casts
that were into the wall.
Trilobites make more sense
to me
because those are individual
hot-dog-shaped things
that attach themselves to the
wall and dig in.
(Host) But hang on.
As you can see,
there are distinct differences
between these
confirmed trilobite tracks
and what we see in Dr. Frank's
tunnels?
Is this case really closed?
Okay. It's true that no giant
sloth fossils
have been found in Dr. Frank's
tunnels.
But the marks don't look exactly
like trilobite tracks either.
So we can't come down on one
side or the other.
We're calling this
an unexplained phenomenon
until we get further
proof.
[host] Tartu, Estonia.
October 2021.
Johan Hui Bapju receives
a disturbing phone call
from his mother
regarding her chicken coop.
He offers to take a look,
but nothing could prepare him
for what he found.
-[dramatic music]
-[unintelligible]
Oh, boy.
Their tail is really tangled.
[host] That's an understatement.
Let's take another look.
What looks
like a heap of black rats
is actually
a heap of black rats
with their tails
hopelessly entangled together.
There are 13 rats
in this bundle
bound together for life.
[McCarthy]
One of them, unfortunately,
looks like it has...
passed on to the next world.
And maybe that's for the best.
I wouldn't wanna be tied to...
a bunch of my brothers
and sisters either.
[host] Would you believe
that this isn't the first time
a knot of rats like this
has been discovered?
It's even got a name.
The Rat King.
The term Rat King is
thought to originate
from German.
It's a number of rats
whose tails have become
entangled so that they are
basically
like a rodent super organism.
An older wiser rat
would sit atop
a pile of younger rats
and they would serve
all of his needs.
Unfortunately for Rat Kings,
they are considered to be
bad omens.
It's thought
that they warn of the plague.
They're also associated with
witchcraft.
[host] Because of this,
in old Strasbourg
were Rat Kings were found,
they were usually
drowned in a well
or dumped in boiling water
before being brought
to the local school teacher
to study them.
Because of their
supernatural associations
and the rarity
of their occurrences,
there's debate
as to whether or not Rat Kings
are cruel man-made hoaxes.
[McCarthy]
There is a long history
of fabricating creatures
for profit.
Think about P. T. Barnum's
Fiji Mermaid,
George Hull's Cardiff Giant.
Back in the day,
people would take lizards
and glue bat wings on them
and say, "Here, buy a dragon."
Or they'd stick a narwhal horn
on a horse and say,
"This is a unicorn."
So, a hoax is definitely
not outside
the realm of possibility.
Knots are complicated.
There's
a whole area of mathematics
called Knot Theory
dedicated to studying
these things in the abstract.
And the knots of the Rat King
tails are complex too.
Scientist have attempted
to recreate them
and they quickly discovered it
was a lot harder than expected.
The knots they made looked
too neat and intentional.
And those rats were dead.
Let's turn to our experts
to see what they think
about this whole thing.
[suspenseful music]
[host] First, we turned
to biologist Floyd Hayes
to find out, is this real?
And, if so, how the heck does
something like this happen?
One possibility
is that it was faked
and somebody actually
stuck the tails together.
But it could also be
a natural phenomenon
and I think that's
most likely in this case.
It's been suggested that
perhaps they are stuck together
from birth,
but that seems very unlikely
because these
are fairly well grown
and they would likely
starve to death
if they were stuck together
for a few weeks.
[host] So, if they weren't
destined at birth
to become parts of a Rat King,
how do they form?
[Hayes] So a Rat King occurs
when the tails
are stuck together.
This usually happens
in black rats, which have
unusually long tails
compared
to other species of rats.
And it happens
mostly in cold countries
during the winter months.
And it is believed
that their tails
are frozen together overnight
when they're huddling together
for warmth
by water or urine
or sperm or food.
[host]
However, in a bizarre twist,
when we do some research
of our own, we find
that temperatures
in this area of Estonia
only had a low
of 36 degrees Fahrenheit
the night
before this Rat King was found.
Not cold enough to freeze.
And what's more, rats,
contrary to their reputation,
groom themselves
nearly as much as cats.
The idea that they
could get stuck together
with dirt and grime
seems unlikely.
So, we turn to wildlife
biologist Stephanie Schuttler.
She says the Rat King legend
carries a grain of truth.
Rats can be carriers of diseases
and parasites,
so, the fact that people
thought Rat Kings
were bad omens
or carriers
or signals of plague,
it's not
that unreasonable of a leap.
[host]
It might just be coincidence,
but the COVID-19 epidemic
was still ravaging Europe
when this video was shot.
And Schuttler says
there's another question
gnawing at her.
Why do these rats lie down
and accept their fates?
Why don't they fight back?
[Schuttler] When animals are
stuck or trying to escape
from something,
they can do things like...
chew their own appendage off.
Like, this has happened
in leg traps
with animals
like coyotes or wolves.
Why aren't these rats
chewing their own tails off
to get away?
Our verdict?
It seems
like Rat Kings form naturally,
but what we don't know
is the why of it all.
Why aren't there more Rat Kings?
And why don't these rats
make more of an effort
to escape?
It remains
an unexplained mystery.
Eisenhower State
Park, Texas 2015.
One morning after some
record-setting rain,
a few rangers are checking
the park's back roads
when they discover this.
KEN GERHARD: It's pretty gross
and weird and disgusting.
SHOW HOST: At first
glance, it almost looks
like patties of ground beef,
oddly arranged straight
down the middle of the road.
But look closer.
Is that one wiggling?
KEN GERHARD: They look to be
giant masses of earthworms
or annelids, segmented worms.
I've honestly never
heard of any type
of behavior like this before.
SHOW HOST: So what
are these worms doing?
And why?
Since we couldn't ask them,
Gerhard got to theorizing.
One interesting
possibility is that we're
looking at a spontaneous
attempt at evolution.
These worms are attempting
to build a superorganism.
SHOW HOST: And
these worms wouldn't
be the first to try it.
KEN GERHARD: One example would
be something called a tunicate.
This is a very primitive
type of vertebrate
that will actually join together
and form a massive chain
tens of feet long.
And there is an advantage to
this in terms of locomotion
through the water.
SHOW HOST: Social insects
can do something similar,
creating a group of
synergetic organisms
known as a superorganism.
KEN GERHARD: In times
of heavy flooding,
you'll often see
these complete islands
of ants that join together.
It's kind of a survival
mode where these animals
are able to collaborate
in order to survive
an extreme situation.
SHOW HOST: And who
could forget bees,
one of the better
known superorganisms
and the source of inspiration
for the term "hive mind."
Perhaps these worms are
exhibiting just that.
I think this is a great
example of a very primitive
life form, a worm,
demonstrating that perhaps it
has a level of conscious
collective intelligence
that is greatly underestimated.
Some scientists are
starting to believe
that the complex brains
that you and I have
could have evolved from
the very first worms.
So does that make worms
smart or humans dumb?
We'll let you make the call.
As for these worm
balls, we'll rely
on the brains of our experts.
Wow.
SHOW HOST: First, Dr.
Floyd Hayes considers
the superorganism theory.
FLOYD HAYES: Worms
could detect each other
through olfactory cues.
And they are attracted to
larger groups of worms.
So they like to socialize
for some reason.
SHOW HOST: While the worms
do socialize to some degree,
Hayes notes that true
superorganisms are eusocial.
They have designated
individuals that reproduce,
and others that don't.
And they have a
very complex society.
These worms are not examples
of eusocial animals,
so I would not classify
them as a superorganism.
SHOW HOST: OK, if superorganism
isn't the right word, what is?
It's hard to understand
why exactly they're gathered
together in the road there.
It may be drying
up a little bit.
And one potential benefit
of grouping together
would be that they
could stay more humid
for a longer period of time.
SHOW HOST: Dr. Hayes brings
up an important point.
Worms need moisture to live.
The mucus on a worm's skin
actually acts as a medium
for oxygen absorption, meaning
that in order to breathe,
the worm cannot dry out.
That's what makes the strange
alignment of these worm balls
the biggest mystery of all.
STEPHANIE SCHUTTLER:
It's really strange
that the worms seem to
congregate in the center
of the road, almost perfectly.
It is probably the
driest part of the road.
Roads are designed to
mound in the center
so that water can
go off the road.
SHOW HOST: It's not adding up.
If worms need moisture to live,
why gather at the driest place
available?
So, folks, we're stumped.
While it's not unnatural for
animals to herd together,
this peculiar behavior
is leading us to call
this an unexplained phenomenon.
In the end, Darwin concluded
that despite their small size,
worms are just as
capable of shaping
the landscape as any person.
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