All language subtitles for Earth.Odyssey.With.Dylan.Dreyer.S06E04.1080p.WEB-DL.AAC2.0.H.264-BTN_track3_[eng]

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NARRATOR: WHEN YOU SEE THIS
SYMBOL, YOU KNOW YOU’RE WATCHING

TELEVISION THAT IS EDUCATIONAL
AND INFORMATIONAL.

THE MORE YOU KNOW ON NBC.

DYLAN: WELCOME EVERYONE, I'M
DYLAN DREYER AND WE'RE HEADED TO

AFRICA FOR AN ANIMAL EXCURSION.

JOIN US ON "EARTH ODYSSEY."

TODAY WE'RE TAKING A TOUR AROUND
THE AFRICAN CONTINENT TO SEE

SOME OF ITS WILDEST INHABITANTS.

LIKE THESE POPULAR PRIMATES WHO
LOVE TO LOOK PRIMPED AND PROPER.

AND A SOAK IN THE SUN IS THIS
HEAVYSET HERD'S FAVORITE PAST

TIME.

LATER WE'LL MEET A GRAZING GIANT
WITH A SPIKEY DISPOSITION.

BUT FIRST, IT'S OFF TO THE
GRASSLANDS TO CATCH ONE OF THE

FASTEST FAMILIES IN THE SAVANNA.

THE ADVENTURE IS JUST BEGINNING
HERE ON "EARTH ODYSSEY."

[MUSIC]

DYLAN: FOR ANIMALS THAT PREFER
THE VEGETARIAN DIET, LIFE'S

CHALLENGES MAY SEEM AS THOUGH
THEY START AND STOP WITH THE

CARNIVORES ON THEIR TAIL.

HOWEVER, PREY ANIMALS FACE A
MULTITUDE OF PROBLEMS FROM

WITHIN THEIR OWN RANKS.

EACH DAY IS A NEW BATTLE FOR
FOOD, MATING PARTNERS AND ONE OF

THE MOST HOTLY-CONTESTED
COMMODITIES - REAL ESTATE.

CLAIMING ONE'S TERRITORY CAN
MEAN THE DIFFERENCE BETWEEN

SURVIVAL AND A MUCH MORE
DIFFICULT ROAD.

SO, STAKING YOUR CLAIM HAS TO BE
PART OF THE DAILY ROUTINE.

CLAIMING, HOLDING AND DEFENDING
TERRITORY IS PART OF THE DAILY

ROUTINE IN THE WILD.

WILDEBEESTS ARE NO EXCEPTION.

THEY HAVE SCENT GLANDS ON THEIR
FOREHEAD SO THEY CAN MARK

TERRITORY AS THEY GRAZE.

TALK ABOUT EFFICIENT.

[MUSIC AND INSECTS]

DYLAN: AS HERBIVORES MOVE, THEY
OFTEN DO SO IN A LINE, ONE AFTER

ANOTHER.

BUT WHY?

WHY NOT A TIGHTLY-PACKED GROUP
OR RANDOM ASSORTMENT?

TURNS OUT THERE ARE SOME VERY
GOOD REASONS FOR THIS REGIMENTED

ROUTE.

THE LINE IS LED BY A MATURE
MEMBER OF THE HERD, SHOWING THE

REST THE WAY.

AS THE LINE MOVES, THE GRASS IS
FLATTENED, MAKING PROGRESS

EASIER.

BUT THE NUMBER ONE REASON FOR
THIS METHOD OF MOVEMENT IS TO

THWART PREDATORS.

[MUSIC AND INSECT NOISE
CONTINUES]

DYLAN: WALKING THIS WAY, THE
GROUP IS MORE DISCREET, KEEPING

THE SOUNDS OF THEIR TRAVEL DOWN
AND REDUCING THE RISK OF

ATTRACTING UNWANTED ATTENTION.

ALL MANNER OF PREY ANIMALS HAVE
DEVELOPED SOME HIGHLY-EFFECTIVE

WAYS OF KEEPING HUNTERS AT BAY.

IT ALL BEGINS WITH THEIR SHARP
SENSES ALWAYS BEING ON ALERT.

THEN THERE'S COOPERATION.

ALL IT TAKES IS ONE ANIMAL TO
RAISE THE ALARM BELLS FOR ALL TO

GET THE MESSAGE.

BECAUSE IN THE WILD, THE BIGGEST
DANGER IS SURPRISE.

SOME ANIMALS WILL EVEN LET A
PREDATOR GET UNCOMFORTABLY CLOSE

SO THEY CAN KEEP WATCH BEFORE
MAKING THEIR ESCAPE.

IT'S TENSE, BUT EFFECTIVE.

LIONS USUALLY WON'T CHASE PREY
THAT'S RUNNING AWAY, SO A HEAD

START IS ALL PREY ANIMALS NEED
TO DISCOURAGE A FOE.

TAKE THIS WATERBUCK, A LARGE
MEMBER OF THE ANTELOPE FAMILY

THAT CAN WEIGH MORE THAN 400
POUNDS.

THEY ARE VERY SENSITIVE TO
DEHYDRATION, SO CAN'T LIVE TOO

FAR FROM A GOOD WATER SOURCE;
HENCE THE NAME.

[MUSIC AND BIRDS CHIRPING]

DYLAN: AS IT DRINKS SO MUCH
WATER, IT NEEDS VEGETATION RICH

IN PROTEIN TO FEED ON.

SO, THEIR HABITAT HAS TO BE
PRETTY SPECIFIC.

ONCE THEY'VE FOUND THE IDEAL
SPOT, THE KEY IS MAKING SURE IT

STAYS THEIRS.

WATERBUCKS CAN'T STOP OTHER
SPECIES FROM USING THEIR STRETCH

OF RIVER, BUT THEY CAN LIMIT
ACCESS AMONG THEIR OWN HERD SO

ONLY A FEW MAY USE IT AT A TIME.

IT'S ALL ABOUT SOCIAL
ORGANIZATION, SO THERE'S NO

SURPRISE THAT THE WATERBUCK IS
EXTREMELY TERRITORIAL AND MANY

CHALLENGERS ARE TAKEN HEAD-ON.

WHEN WE COME BACK, WE'LL VISIT
THE HARDEST WORKING HAIR SALON

IN THE SAVANNA.

AND MEET A WATER BABY THAT NEEDS
A WIDE BERTH.

PLUS, THIS HORNED HULK HAS A
SHARP SENSE OF SMELL.

NEXT ON "EARTH ODYSSEY."

.

NARRATOR: WE NOW RETURN TO THE
MORE YOU KNOW ON NBC.

[MUSIC]

DYLAN: ONE OF THE MOST
CONSISTENT BATTLES IN THE ANIMAL

KINGDOM IS THE FIGHT AGAINST
PESTS.

AND WHEN IT COMES TO FENDING
THEM OFF, SOME ANIMALS ARE

BETTER EQUIPPED.

MONKEYS, FOR EXAMPLE.

WITH THEIR LONG ARMS AND
FINGERS, THEY CAN REACH ANY PART

OF THEIR BODY WITH PRECISION, OR
EVEN THEIR FRIEND'S BODY.

FOR BABOONS, THERE'S A BONUS FOR
PARASITE REMOVAL; A TASTY SNACK.

AND THERE'S A GOOD REASON WHY
THEY USE THEIR MOUTHS INSTEAD OF

THEIR FINGERS TO PICK OFF THE
PESTS.

WHILE THEIR THUMBS AND FINGERS
ARE USEFUL, THEY AREN'T WELL

ENOUGH COORDINATED TO GRAB THE
TINY INSECTS.

THEIR TEETH, ON THE OTHER HAND,
ARE SURGICALLY PRECISE.

WHILE THEY MAY BE THE MOST
FAMOUS FOR IT, MONKEYS AREN'T

THE ONLY ANIMALS THAT APPRECIATE
MUTUAL GROOMING.

IN FACT, IT'S A VERY WIDESPREAD
PRACTICE AND ITS BENEFITS ARE

OBVIOUS.

MUTUAL GROOMING HELPS TO CLEAN
PARTS OF THE BODY WHICH WOULD

OTHERWISE BE UNREACHABLE.

AND OF COURSE, IT'S A TRIED AND
TESTED BONDING EXERCISE.

BUT FOR THE REALLY TOUGH TO
REACH PLACES, THERE ARE ALWAYS A

FEW VOLUNTEERS AVAILABLE.

THIS YOUNG IMPALA IS ACTING AS A
LIVING BIRD FEEDER FOR THESE

OXPECKERS.

THEY'VE COME FOR THE BACKSIDE
BUFFET OF INSECTS IN THE

IMPALA'S FUR.

[MUSIC]

DYLAN: OCCASIONALLY, THE
OXPECKERS CAN BE PRETTY

INTRUSIVE, BORDERING ON
DOWNRIGHT RUDE.

BUT ANIMALS PUT UP WITH THEIR
CHEEKY NATURE BECAUSE THEY ARE

THE BEST IN THE BUSINESS AT
KEEPING COATS OF ALL COLORS AND

SIZES HEALTHY.

[MUSIC CONTINUES]

DYLAN: FROM ZEBRAS TO WATER
BUFFALO, AND ESPECIALLY

GIRAFFES, OXPECKERS AREN'T TOO
PICKY AS LONG AS THERE'S AMPLE

SPACE TO COVER.

AND A GIRAFFE'S NECK IS THE
PERFECT HUNTING GROUND.

THE GIRAFFE IS A WILLING AND
THANKFUL HOST.

HIPPOS ARE ANOTHER APPRECIATIVE
CUSTOMER OF THE OXPECKER'S

GROOMING SERVICES.

RHINOS ARE A PARTICULARLY
ATTRACTIVE ANIMAL FOR OXPECKERS.

THE LARGE SURFACE AREA AND
MINIMAL HAIR MAKE THEIR JOBS

EASIER.

AND THEY'RE EXTREMELY SAFE WHILE
CLEANING THE RHINO.

THIS SYMBIOTIC RELATIONSHIP
BETWEEN OXPECKERS AND THE

ANIMALS OF THE SAVANNA SHOWS
THAT EVEN IN THE WILD, NOTHING

BEATS A SENSE OF COMMUNITY.

COMING UP, WE'RE HEADED INTO THE
SPLASH ZONE ALONG THE AFRICAN

RIVERBANKS.

AND LATER, A MISUNDERSTOOD
MAMMAL MAKES THEIR MARK.

STAY TUNED FOR MORE "EARTH
ODYSSEY."

.

NARRATOR: WE NOW RETURN TO THE
MORE YOU KNOW ON NBC.

[MUSIC]

DYLAN: THE ANIMAL KINGDOM IS
ALWAYS FULL OF THE UNEXPECTED,

AND A BIG 9,000-POUND EXAMPLE IS
THE HIPPOPOTAMUS.

WHILE THEIR MASS MAY IMPRESS,
IT'S THEIR MUNCHING THAT

MATTERS.

THESE SEMI-AQUATIC CREATURES
PLAY A CRUCIAL ROLE IN THEIR

ECOSYSTEM, HELPING TO CLEAR
RIVERS, STREAMS AND LAKES BY

EATING HUGE AMOUNTS OF AQUATIC
PLANTS.

AND THERE'S NOTHING A HIPPO
LOVES MORE THAN A WELL-CARED-FOR

WATERWAY.

IT'S PLAYTIME ON THE WATERFRONT
AND THESE YOUNG HIPPOS ARE

TAKING FULL ADVANTAGE.

THE SPARRING AND WRESTLING IS
HARMLESS AS THEIR TEETH HAVEN'T

COME THROUGH YET.

SO, FOR NOW, IT'S ALL FUN AND
GAMES.

BUT WHEN THEY'RE ADULTS, THE
SIZE OF THEIR CANINES AND

STRENGTH OF THEIR JAWS WILL MEAN
THEY SAVE THESE TYPES OF BRAWLS

FOR SERIOUS MATTERS ONLY.

HIPPOS ARE A RELATIVELY SOCIAL
BUNCH IN THE WILD.

THEY LIVE IN GROUPS MOSTLY
COMPOSED OF A DOMINANT MALE AND

A FEW FEMALES WITH THEIR YOUNG.

EACH ALPHA MALE ONLY CONTROLS
100 YARDS OF RIVERBANK, BUT THEY

DEFEND IT FIERCELY.

AS LONG AS NO CHALLENGERS ARISE,
THE WATERFRONT REMAINS SERENE.

[MUSIC]

DYLAN: HIPPOS AREN'T PICKY WHEN
IT COMES TO BODIES OF WATER.

AS LONG AS THEY CAN SUBMERGE
THEMSELVES COMPLETELY, THEY'RE

AS HAPPY AS CAN BE.

AND FOR GOOD REASON.

A HIPPO'S SKIN ISN'T AS THICK AS
IT LOOKS, NOR DO THEY HAVE ANY

SWEAT GLANDS.

THAT MEANS THEY DEHYDRATE FAST.

NO WONDER THEY HAVE SUCH A
STRONG CONNECTION TO THE WATER.

[MUSIC AND SOUNDS OF WILDLIFE]

DYLAN: YOU'D THINK THIS AQUATIC
AFFECTION WOULD MAKE HIPPOS

GREAT SWIMMERS.

BUT THEY AREN'T AT ALL.

IN FACT, THEY SINK.

[MUSIC CONTINUES]

DYLAN: ONCE UNDER THE SURFACE,
THEY MAKE THEIR WAY TO THE

BOTTOM, HOLDING THEIR BREATH AS
THEY MOVE AROUND.

BUT WHAT ARE THEY DOING DOWN
THERE?

IT'S A TRUE MYSTERY.

ONE THING WE KNOW THEY ARE
NOT DOING IS EATING.

THAT REQUIRES TOO MUCH
BREATHING.

BUT WHAT THEY CAN DO IS SLEEP.

THEY CAN EVEN COME TO THE
SURFACE TO BREATHE WITHOUT

WAKING UP.

TALK ABOUT TRUSTING YOUR
INSTINCTS.

WHEN IT COMES TIME TO FEED,
HIPPOS GORGE ON GRASS.

THEY CAN EAT UP TO 90 POUNDS OF
IT IN A DAY.

BUT THEY PREFER TO EAT ALONE;
NOT WANTING TO RUB SHOULDERS

WITH THEIR FELLOW HIPPOS DURING
A MEAL.

HOWEVER, WHEN THE MEAL IS OVER,
HIPPOS ARE MORE THAN HAPPY TO

HANG OUT.

THE REASON BEHIND THEIR CLOSE
SOCIAL BONDS ISN'T EXACTLY

CLEAR.

IT COULD BE PART OF A ROUTINE.

IN THE SUMMER WHEN THERE ISN'T
MUCH WATER, THEY PACK TOGETHER

TO SHARE WHAT WATER THERE IS.

IT COULD ALSO BE A DEFENSIVE
STRATEGY TO PROTECT THEIR YOUNG

FROM CROCODILES.

BUT THE REAL ANSWER IS THAT WE
SIMPLY AREN'T SURE.

THESE MAJESTIC MAMMALS ARE PROOF
THAT NATURE IS STILL FULL OF

MYSTERIES.

UP NEXT, THIS HORNED HARD BODY
HAS AN UNEXPECTED SOFT SIDE.

THERE'S MORE "EARTH ODYSSEY"
RIGHT AFTER THIS.

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NARRATOR: WE NOW RETURN TO THE
MORE YOU KNOW ON NBC.

[MUSIC]

DYLAN: APART FROM SOME BIRDS,
WHITE IN THE ANIMAL KINGDOM IS

RARE.

[MUSIC AND ANIMAL SOUNDS]

DYLAN: EVEN THE WHITE
RHINOCEROS ISN'T WHITE.

SO, WHY THE MISLEADING NAME?

IT COMES FROM A CONFUSION OF
WORDS.

"WIDE" WAS THE WORD USED TO
DESCRIBE THE RHINO'S SNOUT.

OVER TIME, THIS WAS CORRECTED
INTO WHITE AND THE NAME STUCK.

LEOPARDS HAVE THEIR OWN
COLOR-COATING, FEATURING A

LITTLE UNDERCOVER WHITE ON THEIR
TAIL.

YET WHEN IT COMES TO TRULY
ICONIC LOOKS, THERE ARE FEW MORE

MEMORABLE THAN THE WHITE AND
BLACK STRIPES OF THE ZEBRA.

BUT WHY DO THEY SPORT THESE
UNMISSABLE STRIPES?

THE ZEBRAS ANCESTORS HAD PLAIN
DARK COATS WHICH MAKES THEIR

CURRENT STYLE ALL THE MORE
INTRIGUING.

[MUSIC]

DYLAN: FROM THE MOMENT THEY'RE
BORN, ZEBRAS SHOW OFF THEIR

MONOCHROMATIC COAT WITH PRIDE.

A COMMON THEORY IS THAT ZEBRAS
HAVE STRIPES AS A FORM OF

DEFENSE.

[MUSIC CONTINUES]

DYLAN: ZEBRAS LIVE IN GROUPS
AND USUALLY STICK PRETTY CLOSE

TO THEIR COMPATRIOTS.

AND THAT POSES A PROBLEM FOR
PREDATORS.

ONCE THIS LIONESS SPOTS THE
ZEBRAS, THEY APPEAR AS A

CONFUSING AND SHIFTING MIXTURE
OF LINES.

SEEING THIS OPTICAL ILLUSION
MAKES IT VERY DIFFICULT FOR HER

TO SINGLE OUT JUST ONE AS HER
POTENTIAL PREY.

ON THE SURFACE, ALL ZEBRAS ARE
ALIKE.

BUT LOOKING A LITTLE DEEPER, WE
CAN SEE THAT NO ZEBRA HAS THE

SAME DESIGN AS ANY OTHER.

THIS SUGGESTS ANOTHER REASON FOR
THEIR STRIPES.

MAYBE THEY ACT AS A NATURAL
BARCODE LIKE FINGERPRINTS ON

HUMANS; ALLOWING OTHER ZEBRAS TO
RECOGNIZE EACH OTHER WITH EASE.

HOWEVER, WHAT IF THE REAL REASON
FOR THE STRIPES IS SOMETHING

ELSE ENTIRELY.

NOT DEFENSE.

NOT RECOGNITION.

BUT AIR CONDITIONING; A WAY TO
KEEP COOL.

THIS NEW THEORY HAS COME FROM
OBSERVING A SURPRISING

PHENOMENON.

ABOVE THE DARK STRIPES WHICH
ABSORB MORE HEAT, THE

ATMOSPHERIC PRESSURE IS LOWER
THAN IT IS OVER THE WHITE

STRIPES.

[MUSIC]

DYLAN: SO, WHAT DOES THAT MEAN?

THESE LITTLE DIFFERENCES IN
PRESSURE ARE THOUGHT TO CREATE

TINY AIR CURRENTS ABOVE THEIR
HIDE.

AND JUST LIKE THAT, ANIMAL AC.

[MUSIC CONTINUES]

DYLAN: ZEBRAS ARE KNOWN FOR
THEIR ICONIC BLACK AND WHITE,

BUT THERE'S A THIRD COLOR STRIPE
THAT OFTEN GETS OVERLOOKED.

BROWN STRIPES, ALSO REFERRED TO
AS SHADOW STRIPES, OCCUR ON

CERTAIN ZEBRAS, ESPECIALLY
NEWBORNS.

THESE TAN LINES ARE AN
UNEXPECTED BIT OF MAGIC FOR ONE

OF EARTH'S MOST EYE-CATCHING
ANIMALS.

THANK YOU FOR JOINING US TODAY
AS WE SHINE THE SPOTLIGHT ON

SOME OF NATURE'S MOST UNIQUE
ANIMALS.

WHETHER ICONIC STYLE, UNEXPECTED
PHYSICAL TRAITS, OR JUST A

CHEEKY PERSONALITY, EVERY
CREATURE BRINGS THEIR OWN BRAND

OF VIBRANT LIFE TO THE WILD.

WE MAY NOT HAVE THE ANSWERS FOR
EVERY ANIMAL'S ACTIONS OR

EVOLUTIONARY TRAITS, BUT AS WE
CONTINUE TO OBSERVE THEM, ONE

THING IS CLEAR - IN NATURE,
THERE'S ALWAYS MORE TO LEARN.

WE HOPE YOU'LL JOIN US NEXT TIME
HERE ON "EARTH ODYSSEY."

[MUSIC]