All language subtitles for How Do Animals Do That S01 E02_track3_[eng]

♪♪

Narrator: ANIMALS DO THE MOST
INCREDIBLE THINGS...

LIKE THIS AND THIS.

I BET YOU'RE WONDERING,
"HOW DO THEY DO THAT?"

WE'RE REVEALING ANIMALS'
BIGGEST SECRETS,

LIKE WHY DOESN'T A PENGUIN'S
FEET FREEZE?

WHY IS THERE NO ESCAPE
FROM A WILD DOG PACK?

AND HOW DOES THIS OCTOPUS
BECOME INVISIBLE?

THESE WONDERS AND MORE.

"HOW DO ANIMALS DO THAT?"

--Captions by VITAC--
www.vitac.com

CAPTIONS PAID FOR BY
DISCOVERY COMMUNICATIONS

THIS BEAUTIFUL BARN OWL
IS ON THE HUNT FOR A MEAL,

AND SOMEWHERE IN THIS FIELD,
BENEATH ALL THIS SNOW,

IS A SINGLE MOUSE.

OUT OF SIGHT, IT MUST BE SAFE.

THE OWL CAN'T SEE IT,

BUT THE BIRD IS NOT GIVING UP
ON BREAKFAST JUST YET.

♪♪

BULL'S-EYE,
NO MORE MR. MICE GUY.

SOMEHOW, THIS OWL
IS DEADLY ACCURATE

EVEN WHEN THE MOUSE IS HIDDEN.

SO HOW DO OWLS CATCH PREY
THEY CAN'T SEE?

♪♪

THERE ARE 225 SPECIES OF OWL

ACROSS EVERY CONTINENT
EXCEPT ANTARCTICA.

FOUR-YEAR-OLD LILY
IS A BARN OWL.

LILY,
THAT'S A GOOD GIRL.

LILY IS ALSO A HIGH-FLYING MODEL
AND ASPIRING ACTRESS.

HER AGENT, HANDLER,

LLOYD BUCK, IS THE U.K.'s
TOP PREDATOR TRAINER.

Buck: WE DO FILMING WORK
AND PHOTOGRAPHY WORK WITH LILY,

TRYING TO REPLICATE THAT
NATURAL BEHAVIOR FOR THE CAMERA.

BARN OWLS LIKE
LILY EAT SMALL RODENTS

THAT YOU FIND IN A LONG GRASS.

THEY'RE KNOWN TO HAVE
VERY GOOD EYESIGHT,

BUT THEY'VE ALSO DEVELOPED
OTHER SUPER SENSES.

Narrator: AND IT'S ONE
OF THESE SUPER SENSES

THAT'S THE SECRET
TO FINDING HIDDEN PREY.

OWLS LIKE LILY HAVE
INCREDIBLE HEARING.

LILY'S WHOLE HEAD IS SHAPED LIKE
A BIG FEATHERY SATELLITE DISH,

AND LIKE A SATELLITE DISH,

LILY'S FACE PICKS UP DISTANT
SOUNDS AND AMPLIFIES THEM.

SHE CAN HEAR A MOUSE SQUEAK
HALF A MILE AWAY.

[ MOUSE SQUEAKING ]

I WONDER IF SHE CAN PICK UP
RERUNS OF "DOWNTON ABBEY."

IT'S A TERRIFIC SHOW.

ANYWAY, SPECIAL FEATHERS
MUCH STIFFER

THAN FLIGHT FEATHERS LINE
THE EDGE OF THE FACE AND FUNNEL

THOSE SOUNDS TOWARDS
HER HIGHLY SENSITIVE EARS

HIDDEN BENEATH THOSE FEATHERS.

BUT IT'S ONE THING
HEARING SOMETHING FAR AWAY.

FINDING IT IS ANOTHER.

SO LLOYD HAS SET UP A TEST
TO SHOW

HOW SHE CAN CATCH PREY
WITHOUT SEEING IT.

THIS LITTLE DEVICE EMITS
A BEEP,

WHICH IF I PRESS THE CONTROLLER,
YOU CAN HEAR IT.

Narrator: LLOYD HAS COME UP WITH
AN OWL VERSION OF HIDE-AND-SEEK.

AS THE RULES SAY,
LILY MUST FIRST COVER HER EYES.

THEN LLOYD HIDES THE DEVICE
100 YARDS AWAY.

Buck: PREY ANIMALS ARE NOT
GOING TO MAKE IT EASY FOR LILY.

THEY STICK DOWN
IN THE LONG GRASS,

SO THIS IS THE PERFECT AREA.

Narrator: WE'VE ENHANCED
THE SOUND SO YOU CAN HEAR IT,

BUT IT'S ACTUALLY AS QUIET
AS A MOUSE.

[ DEVICE BEEPING ]

YOU READY?

YEP.

[ LILY SHRIEKING ]

♪♪

[ DEVICE BEEPING ]

♪♪

IMAGINE YOURSELF IN LILY'S
SHOES OR FEATHERS.

SUPPOSE YOU LOST
YOUR CELL PHONE,

AND IT'S IN SOMEWHERE
THE SIZE OF, SAY,

MADISON SQUARE GARDEN
ON VIBRATE.

OH, ONE MORE THING.
YOU'RE BLINDFOLDED.

HOW LONG DO YOU THINK
IT WOULD TAKE TO FIND IT

IN AN AREA THAT BIG?

LILY PICKS UP THE FAINT SIGNAL
IN LESS THAN 20 SECONDS,

AND AS SHE ZEROES IN,

HER BIRD-OF-PREY INSTINCTS
TAKE OVER.

SHE CAN'T SEE THE ROBO-MOUSE,
AND YET SHE'S DIRECTLY OVER IT.

NAILED IT.

NOT JUST CLOSE,
A DIRECT HIT.

THAT'S A GOOD GIRL.

THIS CUTE LITTLE OWL IS IN FACT
A SOUND-SEEKING MISSILE,

BUT HOW DID SHE FIND A TARGET
SHE COULDN'T SEE?

AGAIN, IT'S ALL ABOUT
LILY'S HEAD.

A BARN OWL'S RIGHT EAR
IS HIGHER THAN ITS LEFT,

SO THE SQUEAK OF A MOUSE
REACHES EACH EAR

AT FRACTIONALLY DIFFERENT TIMES.

THIS TINY DIFFERENCE MEANS

LILY CAN WORK OUT
NOT ONLY THE EXACT DIRECTION

BUT THE DISTANCE OF THE SOUND.

HER OFFSET EARS CREATE
A KIND OF SUPER ACCURATE

3-D SOUND-DETECTING MAP.

LILY'S HEARING IS AROUND
10 TIMES

MORE POWERFUL THAN OUR OWN.

INCREDIBLY, NO MATTER WHERE
LLOYD HIDES IT, LILY LOCATES IT.

IT'S PINPOINT ACCURACY.

Narrator: LET THIS BE A WARNING.

DON'T HIDE FROM LILY.

SHE'LL FIND YOU
EVERY SINGLE TIME.

THEY ARE AMAZING, AMAZING BIRDS.

[ INSECTS BUZZING ]

♪♪

DEEP BENEATH THE WAVES,
SOMETHING IS HIDING.

IT'S RIGHT IN FRONT OF YOU,

AN IT'S ONE OF NATURE'S
MOST AMAZING CREATURES.

CAN YOU SEE IT?

TAKE A FEW SECONDS TO TRY
AND FIND IT,

AND THREE, TWO, ONE,
THERE IT IS.

LET'S SEE THAT AGAIN.

EVEN KNOWING IT'S THERE,

THIS OCTOPUS IS ALMOST
IMPOSSIBLE TO SEE.

IT'S LIKE HARRY POTTER'S
INVISIBILITY CLOAK IN REAL LIFE.

SO, HOW ARE OCTOPUSES
SUCH MASTERS OF DISGUISE?

AROUND 300 SPECIES OF OCTOPUS
LIVE IN EVERY OCEAN ON EARTH,

AND EVERY ONE HAS THE
AMAZING ABILITY TO TRANSFORM.

THEIR DISGUISING SECRET
IS IN THEIR INCREDIBLE SKIN.

IT'S MADE OF ELASTIC CELLS
FILLED WITH COLORED PIGMENTS.

EACH CAN STRETCH AND SHRINK

TO CHANGE THEIR SIZE
AND COLOR AT WILL.

IT LOOKS TRIPPY UP CLOSE,
BUT IT'S LIKE MAGIC IN THE WILD.

THOUSANDS OF CELLS
ALL COLOR MATCH

THEMSELVES TO THE SURROUNDINGS

A BIT LIKE HOW INDIVIDUAL
PIXELS ON A TV

CREATE A PERFECT IMAGE
ON A SCREEN.

BUT OCTOPUSES DON'T STOP
AT SIMPLY CHANGING COLOR.

THEY ARE SHAPE-SHIFTERS.

THE SKIN CAN MOVE TO FORM BUMPS,
RIDGES,

SPIKES AND HARD EDGES
LIKE THE PLANT LIFE

AND ROCKS AROUND THEM
AND RESULT:

NOW YOU SEE ME,
AND NOW YOU DON'T.

TO EVADE PREDATORS,

MOST OCTOPUSES WILL
PULL THIS DISAPPEARING TRICK,

BUT IN SHALLOW WATERS
AROUND SOUTHERN ASIA,

THERE IS ONE THAT DOES MUCH
MORE THAN THAT, MUCH MORE.

IT SCARES OFF PREDATORS

BY IMPERSONATING
MORE DANGEROUS CREATURES.

THIS IS THE MIMIC OCTOPUS.

BELIEVED TO HAVE A REPERTOIRE
OF AT LEAST 15 KNOWN ALIASES,

WHEN A HUNGRY GREY REEF
SHARK SWIMS NEAR,

IT FLATTENS ITS BODY
INTO THE SHAPE OF A TOXIC

BOTTOM-DWELLING FISH
OR GROWS SPIKES

AND TURNS ORANGE AND WHITE
TO LOOK LIKE A LETHAL LIONFISH.

AND THEY'RE SO INTELLIGENT
THAT THEY KNOW

THE BEST ALIASES TO USE,

LIKE WHEN FACED
WITH A DAMSELFISH.

THEY MAY LOOK CUTE,
BUT THEY ATTACK OCTOPUSES,

SO THE OCTOPUS SCARES IT OFF

BY IMPERSONATING
THE DAMSELFISH'S OWN PREDATOR,

A VENOMOUS SEA SNAKE.

THE OCTOPUS IS SO GOOD
AT MIMICKING,

IT EVEN TRICKED US.

SCIENTISTS DIDN'T KNOW
THEY EXISTED UNTIL 20 YEARS AGO,

EVEN THOUGH THEY'VE BEEN
SWIMMING IN PLAIN SIGHT

FOR MILLENNIA.

THE MIMIC OCTOPUS IS
THE UNDISPUTED CHAMPION

OF HIDE-AND-SEEK.

♪♪

COMING UP:
EXTRAORDINARY HUNTERS,

TOILET-CLIMBING RATS
AND UNFREEZABLE FEET.

♪♪

Narrator:
ON THE PLAINS OF AFRICA,
PREDATORS ARE EVERYWHERE,

BUT WHAT'S
THE MOST EFFICIENT HUNTER?

SURPRISINGLY, IT'S NOT LIONS.

THEIR HUNTING SUCCESS RATE
CAN BE AS LOW AS 17 PERCENT.

HOW ABOUT CHEETAHS
WITH THEIR EXTREME SPEED?

NOT EVEN CLOSE.

THEY ONLY CATCH
AROUND HALF OF THEIR PREY.

HUMANS: EVEN WITH GUNS,
THEIR SUCCESS RATE CAN BE

AS LOW AS 20 PERCENT.

SURPRISINGLY THE TOP DOG
IS THE WILD DOG.

[ WILD DOG BARKS ]

THEY MAY RESEMBLE MAN'S
BEST FRIEND,

BUT FOR THEIR PREY,
THEY'RE ITS WORST NIGHTMARE

WITH AN INCREDIBLE 80 PERCENT
HUNT-TO-KILL CONVERSION RATE.

SO WHAT MAKES WILD DOGS AFRICA'S
MOST SUCCESSFUL HUNTERS?

MAGNIFICENT YET MENACING,

WILD DOGS ARE ALSO KNOWN
AS PAINTED DOGS

BECAUSE OF THEIR STRIKING COATS.

IN PACKS OF UP TO 20, THEY ROAM
THE EAST AFRICAN SAVANNA

WITH EACH PACK RULING
TERRITORIES THE SIZE OF CHICAGO.

THESE NOMADIC DOGS CAN COVER
30 MILES EACH DAY,

HUNTING PREY FROM SMALL RABBITS
TO HUGE WILDEBEEST.

THIS PACK OF 10 LIVES

IN THE N/A'AN KU SE RESERVE
IN NAMIBIA,

AND FOR THE LAST 5 YEARS,

COLETTE MASSIER
HAS BEEN LEARNING

HOW THESE KILLER CANINES
CAN CATCH

ALMOST EVERYTHING
THEY SET THEIR TEETH ON.

Massier:
THEY'RE NOT THE BIGGEST.

I MEAN, THE LION AND LEOPARD
IS FAR BULKIER,

MUCH STRONGER,
WEIGHS A LOT MORE.

THESE GUYS ARE SLENDER.
THEY'VE GOT SKINNY LITTLE LEGS

THAT YOU THINK COULD SNAP
LIKE A TWIG,

BUT THEY ARE EXTREMELY
SUCCESSFUL IN THEIR HUNTING.

Narrator: TO REVEAL WHAT
MAKES THEM SO SUCCESSFUL,

COLETTE IS GOING INTO
THE WILD DOGS' DOMAIN

TO EXAMINE
THEIR HUNTING UP CLOSE.

SHE'S BRINGING A LURE
OF FRESH SPRINGBOK,

BUT THE SIGHT OF HUMAN FLESH
WILL GET THE DOGS SALIVATING TOO

BECAUSE AFRICAN WILD DOGS
CANNOT BE TAMED.

Massier: THEY ARE WILD.

YOU REALLY HAVE TO BE CAREFUL.
YOU CANNOT TAKE IT LIGHTLY.

YOU'VE ALWAYS
GOT TO KEEP A LOOKOUT

BECAUSE THEY'RE VERY QUICK.

SO IT IS QUITE A HAIRY
SITUATION,

BUT WE SHOULD MAKE IT OUT
ALIVE, HOPEFULLY.

Narrator: HOPEFULLY?

IT LOOKS LIKE THEY'VE ALREADY
PICKED UP THE SCENT

OF COLETTE
AND THE SPRINGBOK LURE.

[ WILD DOGS YELPING ]

♪♪

THEY'RE COMING.

Narrator: THE HUNT IS ON,

AND THE DOGS EASILY KEEP PACE
WITH THE TRUCK.

Massier: THEY CAN REACH SPEEDS
OF 60 Ks PER HOUR,

WHICH IS INCREDIBLE.

Narrator:
THAT'S NEARLY 40 MILES PER HOUR

AND NOT AS A SHORT SPRINT.

THE SECRET TO THEIR HUNTING
SUCCESS IS,

THEY CAN SUSTAIN THEIR SPEED.

PREY LIKE ANTELOPE
CAN OUTSPRINT THEM,

BUT THESE DOGS MAINTAIN THEIR
SPRINT SPEED FOR UP TO 3 MILES.

LIKE LONG-DISTANCE
CYCLING TEAMS,

THEY SWAP THE LEADER
TO MAINTAIN THE PACE.

THIS DOG ON THE RIGHT COMES FROM
THE BACK AND NOW TAKES THE LEAD.

Massier: THAT'S HOW THE PACK
AS A WHOLE

REALLY MANAGES
TO GO THESE LONG DISTANCES

THAT A CHEETAH COULD NEVER DO
OR A LEOPARD OR EVEN A LION.

Narrator: FOR THE PREY,
IT'S LIKE BEING CHASED

BY 10 FURRY TERMINATORS.

THEY JUST KEEP COMING.

NO MATTER HOW FAST YOU RUN
OR YOU THINK YOU'RE RUNNING,

YOU'RE GOING TO TIRE,
YOU'RE GOING TO SLOW DOWN,

BUT THESE GUYS
ARE GOING TO KEEP GOING.

IT'S RELENTLESS.

Narrator: AND AS THE PREY TIRES,
THE DOGS DO SOMETHING AMAZING.

THEY COMMUNICATE
WITH EACH OTHER.

CONSTANT YELPS
AND BODY-LANGUAGE CUES

SEND ORDERS ACROSS THE PACK,

ORGANIZING THE HUNTING PARTY
INTO ATTACK POSITIONS.

THEIR TECHNIQUE
IS TO ALL SURROUND THE PREY

AND CUT OFF THE WEAKEST.

THAT'S EXACTLY
WHAT THEY'RE DOING.

THEY'RE SORT OF TRYING TO CUT US
OFF AS A PIECE OF MEAT REALLY.

Narrator: DOGS MOVE TO TAKE OUT
THE TARGET, FLANKING THE SIDES.

OTHERS ARE COMMANDED TO
SPRINT FORWARD AND HEAD IT OFF.

SO THIS PIECE OF SPRINGBOK
WE HAVE HERE

DOESN'T ACTUALLY STAND A CHANCE.

♪♪

Narrator: WILD DOGS' KILLER
CATCHING TECHNIQUES

MEAN THAT NO MATTER
HOW FAR YOU RUN,

THERE IS LITTLE CHANCE
OF ESCAPE.

Massier: THEY ARE AFRICA'S MOST
MAGNIFICENT, AMAZING HUNTERS.

I'M SO LUCKY TO BE ABLE
TO SEE THIS IN ACTION.

♪♪

Narrator: COMING UP:
WHY NO PLACE

IS OFF-LIMITS TO A RAT

AND HOW PENGUINS
CAN COMFORTABLY BE ON ICE 24-7.

Narrator:
CHICAGO, THE WINDY CITY,

HOME TO BEARS,
CUBS AND BULLS.

COME ON IN.

BUT THERE'S A NEW TEAM IN TOWN,

AND THEY'RE STEPPING UP
AND TAKING OVER.

A RECENT STUDY CLAIMS
THAT CHICAGO IS NOW

THE RAT CAPITAL OF AMERICA.

MANY BELIEVE IN ALL URBAN AREAS,

WE'RE ONLY EVER
6 FEET AWAY FROM ONE.

THERE'S PROBABLY ONE
RIGHT NEXT TO YOU RIGHT NOW.

BUT WHY ARE WE ALWAYS JUST
A FEW FEET AWAY FROM A RAT?

[ RAT SQUEAKS ]

THERE ARE 56 SPECIES OF RAT,

BUT THE BEST KNOWN AND MOST
ABUNDANT IS THE BROWN RAT.

BROWN RATS DON'T LIVE
IN THE WILD.

WHEREVER THERE ARE HUMANS,
THEY KNOW THEY'LL FIND

BITS OF OLD BURGER,
FINGER-LICKED CHICKEN

AND THE OCCASIONAL
LOADED HOT DOG.

NOT YOU, SIR.

AND THEY MULTIPLY FAST.

A FEMALE BROWN RAT CAN PRODUCE
12 LITTERS A YEAR

WITH UP TO 22 PUPS EACH TIME.

WITHIN 3 MONTHS,
HER BABIES CAN PRODUCE BABIES,

WHO ALSO PRODUCE BABIES,

WHICH MEANS
A SINGLE PAIR OF BROWN RATS

CAN HAVE AS MANY AS 100 BABIES

AND 2,000 DESCENDANTS
IN JUST 1 YEAR.

BUT THE FACT THERE ARE SO MANY
ONLY PARTLY EXPLAINS

WHY WE'RE ALWAYS
SO CLOSE TO THEM.

IT SEEMS RATS CAN GO ANYWHERE,

AND I MEAN ANYWHERE.

WE'VE COME UP WITH A STRING
OF CHALLENGES TO TEST

JUST HOW EASY IT IS FOR RATS
TO GET UP CLOSE WITH HUMANS.

MEET THE CHALLENGERS:

RANDY AND HIS RODENT BUDDY,
ROCKY.

FIRST TEST: HOW SMALL A HOLE
CAN A RAT GET THROUGH?

INCREDIBLY, RATS CAN SQUEEZE
THROUGH A HOLE

AS SMALL AS A QUARTER.

THE RATS' RIBS ARE HINGED
AT THE SPINE,

ALLOWING THEM TO TEMPORARILY
COLLAPSE UNDER THE PRESSURE.

THE GENERAL RULE IS, IF ITS HEAD
FITS, THEN THE BODY WILL FOLLOW.

BETTER BLOCK UP
THOSE BASEBOARDS.

NOW, WILL THIS CHASM STOP THEM?

♪♪

INCREDIBLE.

RATS CAN JUMP 2 1/2 FEET
IN THE AIR.

THAT'S THE EQUIVALENT
OF THE AVERAGE MAN

JUMPING 11 FEET OFF THE GROUND.

HANDY FOR FINDING FOOD
IN ALL THOSE HIGH PLACES.

RANDY IS TAKING
A WELL-EARNED BREATHER,

BUT WILL ROCKY TAKE ON
THE HIGH-WIRE CHALLENGE?

NICE WORK.

WHOA.

ROCKY NEARLY FELL,
BUT NOT TO WORRY:

HE HAS INCREDIBLE BALANCE
THANKS TO HIS SUPERSIZED TAIL.

A RAT'S TAIL FOLLOWS
A SIMILAR PRINCIPAL

AS A TIGHTROPE WALKER'S POLE.

IT WORKS AS A COUNTERBALANCE.

IF HE TIPS ONE WAY,

THE TAIL SWINGS
IN THE OPPOSITE DIRECTION.

THIS BALANCING TECHNIQUE
ALLOWS THE RAT

TO RUN ACROSS POWER LINES
AND INTO YOUR HOME.

APPROACHING THE FINAL CURVE,

ROCKY IS COMMITTING
THE ULTIMATE PHOBIC NIGHTMARE.

A RAT CAN SCURRY UP SEWER PIPES
AND INTO YOUR TOILET.

RATS ARE EXCELLENT SWIMMERS
AND CAN TREAD WATER FOR 3 DAYS.

THEY CAN EVEN SURVIVE
BEING FLUSHED BACK DOWN

BECAUSE THEY CAN HOLD THEIR
BREATH UNDERWATER FOR 3 MINUTES.

RATS DON'T ALWAYS
GET A GOOD RAP,

BUT WHEN IT COMES
TO SNIFFING OUT FOOD,

THERE'S NO HOME, BATHROOM
OR KITCHEN THAT'S OFF-LIMITS,

WHICH IS WHY RANDY
AND HIS AGILE BUDDIES

ARE ALWAYS JUST
A FEW FEET AWAY.

LUNCH IS ON ME, FELLAS.

COMING UP: A PENGUIN BABY
WITH ANTIFREEZE FEET.

Narrator: ANTARCTICA,
THE COLDEST PLACE ON EARTH.

TEMPERATURES DOWN HERE
PLUMMET TO A RECORD

MINUS 135.8 DEGREES FAHRENHEIT.

IMAGINE STANDING
IN THOSE TEMPERATURES.

COLD YET?

WELL, NOW IMAGINE STANDING THERE
WITHOUT SHOES OR SOCKS,

JUST BARE FEET.

AFTER JUST 2 MINUTES
WITHOUT WARM BLOOD

PUMPING AROUND YOUR FEET,

YOUR TOES START TO FREEZE
AND WILL EVENTUALLY FALL OFF.

BUT AMAZINGLY,
THERE IS ONE ANIMAL

WHOSE FEET ARE FINE
IN THIS DEEP FREEZE:

THE PENGUIN.

THEY STAND AROUND FOR MONTHS
WITH BARE TOES,

JUST CHILLING OUT.

SO WHY DON'T PENGUINS'
FEET FREEZE?

THESE ICE SHEETS ARE HOME
TO AN ESTIMATED

40 MILLION PENGUINS,

HUGE GROUPS OF SMALL
SOUTHERN ROCK HOPPERS,

KINGS AND THE BIGGEST
MOST ICONIC EMPERORS.

TO KEEP THEIR BODIES WARM
IN THE FREEZING COLD,

ALL THESE BRILLIANT BIRDS HAVE
AN INSULATING LAYER OF FAT

AND THICK DOWNY FEATHERS THAT
TRAP WARM AIR AGAINST THEIR SKIN

EXCEPT ON THEIR FEET.

LOOK AT THEM!

THOSE TOES HAVE NO FEATHERS,
NO FAT,

NOTHING TO KEEP THEM WARM.

INSTEAD, CLEVER INTERNAL

PLUMBING KEEPS
THEIR TOES TOASTY.

BLOOD VESSELS BRING COLD BLOOD
UP FROM THE BARE FEET.

WARM BLOOD COMES DOWN
FROM THE FEATHER-COATED BODY.

WHERE THE BLOOD MEETS, THE
VESSELS WRAP AROUND EACH OTHER,

ALLOWING THE HOT BLOOD
TO WARM UP THE COLD BLOOD.

IT MEANS BLOOD GOING UP
INTO THE BODY ISN'T COLD,

AND BLOOD PUMPING DOWN
IS WARM ENOUGH

TO KEEP THEIR TOES
FROM FREEZING.

IF YOU'RE INTO SCIENCE,
IT'S CALLED

THE COUNTERCURRENT
HEAT EXCHANGE.

BUT WHEN FREEZING ANTARCTIC
BLIZZARDS COME IN,

EVEN THIS BIOLOGICAL BRILLIANCE
NEEDS HELP.

TO HEAT THEIR TOES, PENGUINS SIT
ON THEIR BACKSIDES

TO RAISE THEIR FEET
OFF THE COLD ICE

AND WRAP THEM AND THEIR YOUNG
IN THEIR FEATHERS.

IT'S THE EQUIVALENT
OF PENGUIN SLIPPERS.

THESE FEET-WARMING TACTICS

MIGHT NOT GIVE THEM A GRIP
ON THE ICE,

BUT IT DOES GIVE THEM
HAPPY FEET.