Fourrure, plumes et plaisir : Les faits et les mythes les plus intéressants sur les animaux

Sympa

Vous êtes-vous déjà demandé si les zèbres étaient blancs avec des rayures noires ou noirs avec des rayures blanches ? Et saviez-vous que les hiboux sont des chasseurs pratiquement silencieux ? Leurs plumes ont des structures uniques qui étouffent les sons, ce qui en fait des prédateurs furtifs. MAINTENANT, voici un fait insolite : un groupe de flamants roses s'appelle une "flambée". C'est tout à fait approprié, n'est-ce pas ? Et sachez que les guépards peuvent accélérer de 0 à 60 miles à l'heure en quelques secondes seulement - c'est ce qu'on appelle la puissance féline turbocompressée ! La nature regorge de ces bizarreries fascinantes qui font du règne animal une source perpétuelle d'admiration et d'émerveillement.  Animation créée par Sympa.  #AnimauxFascinants #CuriositésAnimales #MythesEtRéalités #FaitsÉtonnants #AnimauxInsolites #SaviezVousQue #ÉtonnantRègneAnimal #MerveillesAnimales #AnimauxDuMonde #DécouvertesZoologiques #FaitsSurprenants #MythesAnimaliers #AnimauxSauvages #Biodiversité #SavoirAnimal #NatureExtraordinaire #FaitsInédits #AnimauxEnVoieDeDisparition #FolkloreAnimalier #ÉcosystèmesAnimales ---------------------------------------------------------------------------------------- Musique par Epidemic Sound https://www.epidemicsound.com   Pour ne rien perdre de Sympa, abonnez-vous!: https://goo.gl/6E4Xna​ ---------------------------------------------------------------------------------------- Nos réseaux sociaux : Facebook: https://www.facebook.com/sympasympacom/ Instagram: https://www.instagram.com/sympa.offic...  Stock de fichiers (photos, vidéos et autres): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ----------------------------------------------------------------------------------------  Si tu en veux encore plus, fais un tour ici:  http://sympa-sympa.com

Transcript

00:00 There are sharks that shine in the dark.

00:03 For example, the shark "Hool".

00:05 They live in the dark depths of the ocean,

00:07 about 518 meters under the surface.

00:10 Nobody knows exactly why,

00:12 but they emit a fluorescent glow

00:14 that only the other shark "Hool" can see.

00:17 Scientists have detected this glow

00:19 by using filters that block yellow light.

00:22 They think it could be the way for these big fish

00:25 to communicate with their friends.

00:27 This glow helps these sharks fight infections at the microbial level.

00:31 The "Hool" have secret password words

00:33 that they use to recognize each other.

00:35 They are a specific type of parasitic bird

00:38 because they lay their eggs in the nests of other species of birds.

00:41 The young "Hool" have an internal mechanism

00:44 that allows them to recognize the field of their species

00:46 as a kind of secret password word that only they know.

00:49 This is how they manage to find other birds of their species.

00:53 A grizzly has an incredibly strong bite force.

00:57 It can look cute,

00:59 but if you get close to this big guy,

01:01 you'd better stay away from its sharp claws

01:04 and especially from its mouth.

01:06 Its bite force is more than 8 million Pascals,

01:09 which means it can crush a bowling ball.

01:12 Some animals have thick stripes,

01:15 others are more superficial.

01:17 Tigers are part of the first group.

01:19 Not only their fur is striped, but their skin is too.

01:23 It's the same for other big fur felines,

01:26 like snow leopards.

01:28 Giraffes and zebras are part of the second group

01:31 because they have patterns only on their fur.

01:34 Speaking of zebras, do you think they are black with white stripes

01:37 or white with black stripes?

01:39 At first glance, it seems that the second option is the right one.

01:43 Their black stripes end mainly inside their legs

01:46 and on their bellies, and the rest is white.

01:49 But that's not true.

01:51 Surprisingly, they are black with white stripes.

01:54 All their fur, whether white or black,

01:56 grows from follicles containing cells called melanocytes.

02:00 All animals have these cells.

02:02 They produce a pigment called melanin

02:05 that gives color to their hair and skin.

02:08 In zebras, chemical messages indicate

02:11 which melanocytes send the pigment to which area of the fur.

02:14 Zebras have a pattern of black and white,

02:16 but white is not a pure pigment.

02:18 It's a lack of melanin.

02:20 Black is their default color.

02:23 Koalas have fingerprints so close to ours

02:26 that they could even alter crime scenes.

02:28 Apparently, they don't have much in common with humans.

02:32 But look closer at their hands.

02:34 They have distinctive loops and arches,

02:36 so if a koala wants to do something illegal,

02:39 it would be good if it wore gloves.

02:41 Ghost crabs growl when they are in the presence of creatures

02:45 they don't like or find threatening.

02:47 They do so by using their teeth from their stomach.

02:50 First, they let you know that they will defend themselves

02:52 if you try something by showing them their claws.

02:55 If that doesn't work,

02:56 they emit a scary growling like dogs.

02:59 But the noise comes from the rubbing of their three long and hard teeth

03:03 inside their stomach.

03:05 Ghost crabs make the same noise when they chew food.

03:09 Speaking of teeth, did you know that narwhal's teeth

03:12 are actually a kind of upside-down teeth?

03:15 Unlike most other whales,

03:17 narwhals are the only ones to have a large defense,

03:20 or teeth, that grow inside their jaws.

03:23 They have up to 10 million nerve endings

03:26 that are not protected,

03:28 which means that their defense is very sensitive to all kinds of contact.

03:32 It's almost like a piece of skin

03:34 because defenses generally don't have many nerve endings.

03:38 Almost 95% of humans are right-handed,

03:41 and it's the same for dolphins.

03:43 There are even more right-handed people among them than among humans.

03:46 In a study, scientists discovered that dolphins

03:50 turn to the left more than 99% of the time,

03:53 which means they are right-handed.

03:55 They place their right side and right eye

03:58 closer to the bottom of the ocean when they go for their prey,

04:01 such as squids, shrimps or small fish.

04:04 Other interesting facts about the ocean.

04:06 Did you know that humpback whales use bubbles

04:09 when they chase their prey?

04:11 You might think that they don't need any special method,

04:13 given their size,

04:15 but when they throw their prey into the deep waters,

04:17 these whales team up and use a technique called "bubble netting".

04:21 While swimming in an ascending spiral,

04:23 they blow bubbles underwater.

04:25 These bubbles prevent the fish from escaping.

04:27 The oldest proof that we have of domesticated cats

04:30 dates back to 12,000 years ago.

04:32 Researchers discovered it about 20 years ago

04:34 by digging in an ancient village in Cyprus.

04:36 They found bones of cats

04:38 right next to human bones,

04:40 suggesting that they were close,

04:42 even when their lives were coming to an end.

04:44 Humans were hunters,

04:46 so they domesticated dogs first,

04:48 about 29,000 years ago.

04:50 Dogs helped them catch other animals,

04:52 but they didn't think they needed cats

04:54 until they began to settle

04:56 and store the surplus of food.

04:59 Mice are often found in cereal warehouses,

05:02 and cats proved to be very useful at this time.

05:05 Macaws are very ingenious

05:07 when they want to scratch their bodies.

05:10 They can probably be proud of their magnificent beaks,

05:13 but they obviously think that scratching them is not enough.

05:16 Researchers have found that they spontaneously

05:18 take a small wooden stick

05:20 to scratch a place that eats them.

05:23 There is a special type of ant

05:25 that only lives in a small part of Manhattan,

05:28 Broadway's land between the 63rd and 64th centuries.

05:31 The 63rd and 76th streets

05:33 are the places that these rampant creatures

05:35 have decided to choose.

05:37 The manatee ant seems to come from Europe,

05:39 but no European species can really look like it.

05:42 There is a myth that says

05:44 cats and dogs see the world in black and white.

05:47 In reality, they simply cannot distinguish certain colors.

05:51 Nobody knows exactly how dogs see.

05:54 Some think they only distinguish two colors.

05:57 It could be blue and yellow,

05:59 for what we know,

06:01 but they can perceive the shades of other colors better than humans.

06:05 And cats have a wonderful night vision.

06:08 They need about seven times less light than humans

06:11 to see in the dark.

06:13 It was thought that giraffes were silent,

06:15 but it was recently discovered that they emitted

06:17 low-frequency sounds at night to communicate with each other.

06:21 During the day, they do not say a word

06:23 and mutually warn of danger

06:25 in a very unusual way,

06:27 by moving their very developed eyebrows.

06:29 It is likely that at night

06:31 it is more difficult for them to distinguish

06:33 the eyebrows of their peers,

06:35 which is why they start talking for real.

06:37 Still about giraffes,

06:39 these animals sleep well more than 30 minutes a day,

06:41 but probably not as much as you.

06:43 Their sleeping rhythm is quite typical.

06:45 After watching a herd of giraffes,

06:48 researchers discovered that they slept at night

06:50 and took short naps in the afternoon.

06:53 In total, each giraffe has about 5 hours of sleep per day.

06:56 And besides, a herd of giraffes

06:58 is actually called a giraffe tower.

07:00 It's pretty logical,

07:02 knowing that they have such a long neck.

07:04 Seagulls can drink salty water.

07:06 They have secreting glands

07:08 of salt near their eyes.

07:10 These glands quickly purify sea water

07:12 and the salty residue

07:14 comes out through their nostrils.

07:16 Salty morph in a way.

07:18 Adélie's chubs are really romantic.

07:20 They have only one life partner.

07:22 The male offers a soft stone

07:24 to the female to start a family.

07:26 A bit like a wedding ring.

07:28 But like humans,

07:30 the female penguin

07:32 can refuse the gift.

07:34 Speaking of animal love,

07:36 foxes are also romantic.

07:38 Males make good father and husband

07:40 and they are devoted to their loved ones for life.

07:42 They take care of females

07:44 and even take the cubs out of their fur.

07:46 They improve the terrier

07:48 and actively participate in the education of their young.

07:50 Dolphins can sleep with one eye closed

07:52 and the other open.

07:54 Half of the brain rests

07:56 and dreams while the other half

07:58 scans the environment

08:00 in search of signs of danger.

08:02 The perfect brain to sleep during classes

08:04 and boring meetings.

08:06 In addition, dolphins manually control their breathing.

08:08 If both parts of their brain

08:10 slept at the same time,

08:12 they could simply drown.

08:14 Sea otters are the most adorable

08:16 sleepers in the animal kingdom.

08:18 In summer, because of the heat,

08:20 sea otters spend all their time in the water.

08:22 They swim on their backs

08:24 and sleep in this position.

08:26 Babies sleep on their mother's belly

08:28 and adults hold on to their legs

08:30 so as not to be separated by the currents.

08:32 Ostriches do not put their heads

08:34 in the sand when they feel threatened.

08:36 In fact, they never put their heads in the sand.

08:38 This myth spread

08:40 because of the famous expression

08:42 "do the ostrich's policy".

08:44 In reality,

08:46 ostriches dig holes in the sand

08:48 to lay their eggs

08:50 because they are birds that cannot fly.

08:52 To make sure they are evenly heated,

08:54 ostriches dip their heads

08:56 to turn the eggs from time to time.

08:58 But these animals still have

09:00 a certain propensity for flight.

09:02 When they face a threat,

09:04 they can let themselves fall on the sand

09:06 and remain perfectly still,

09:08 pretending not to be alive.

09:10 According to a popular belief,

09:12 sharks could only breathe

09:14 by moving around

09:16 their gills.

09:18 Although many types of sharks

09:20 are actually designed like this,

09:22 many others, like the feeding sharks

09:24 that swim in the deep water,

09:26 do not need to swim to pump

09:28 rich oxygen water to their gills.

09:30 However, all sharks

09:32 are devoid of swimming gills,

09:34 so if they stop swimming,

09:36 they will probably sink to the bottom of the water.

09:38 But fortunately, the body of a shark

09:40 cannot be compressed.

09:42 This is why descents or quick climbs

09:44 are not recommended for them.

09:46 Scientists from Japan

09:48 listened to cat audio recordings

09:50 to prove that they were really

09:52 in good shape.

09:54 In these recordings,

09:56 the cat owners called them by their name.

09:58 The cats' pupils were dilated

10:00 and the animals moved their tails,

10:02 their paws or their ears.

10:04 They heard the calls,

10:06 but they rarely answered.

10:08 It's a matter of evolution.

10:10 Cats have become close to humans

10:12 but have never really been taught.

10:14 And yet we continue to feed them.

10:16 Birds are actually

10:18 among the last survivors of dinosaurs.

10:20 They evolved from theropods,

10:22 the dinosaurs that ran on two legs.

10:24 So technically,

10:26 the T-Rex is a cousin of the chicken,

10:28 ostrich and even hummingbird.

10:30 In reality, pink flames are white,

10:32 but they take this pink hue

10:34 thanks to beta-carotene,

10:36 a pigment found in the algae

10:38 and the shrimp they feed on.

10:40 You can change the color of your skin.

10:42 If you eat a lot of carrots,

10:44 it will turn slightly orange.

10:46 This is due to the strong beta-carotene

10:48 in the vegetable.

10:50 Sailors from all over the world

10:52 have spoken of giant squid

10:54 they encountered during their voyages.

10:56 For many years, scientists have considered

10:58 that long-tentacled monsters

11:00 were a myth.

11:02 But in 2004, the first photo

11:04 of a giant squid was made.

11:06 They really exist.

11:08 They are about 13 meters long.

11:10 Mosquitoes really sting some people

11:12 more than others.

11:14 The most attractive humans for them

11:16 are those who have blood type O.

11:18 In addition, these insects have a very good sight.

11:20 They are attracted by green, black and red colors.

11:22 So check the color of your clothes

11:24 before going camping.

11:26 You can put a squid in a trance

11:28 for 15 minutes.

11:30 To do this, you have to caress the animal's nose

11:32 with your hand.

11:34 This type of hypnosis is called tonic immobility.

11:36 It occurs thanks to the receptors

11:38 present in the squid's nose.

11:40 When you caress them, the receptors send

11:42 many signals and the squid's brain

11:44 is unable to treat them all.

11:46 That's how you're supposed to get close

11:48 enough to rub his nose.

11:50 Elephants are not afraid of mice.

11:52 But these massive animals

11:54 have a bad sight and move

11:56 quite slowly.

11:58 That's why they can be frightened by a bird

12:00 or a small creature like a mouse

12:02 that passes in front of them.

12:04 But it's no surprise.

12:06 One of the most popular beliefs

12:08 is that mice love cheese.

12:10 This myth

12:12 appeared a long time ago

12:14 when people started

12:16 storing food.

12:18 Since mice are regular visitors

12:20 to human houses,

12:22 they were constantly looking for food.

12:24 People used to store cereals

12:26 in jars.

12:28 They would suspend the meat

12:30 but put the cheese on a shelf.

12:32 Mice would eat it

12:34 and they would prefer

12:36 chocolate or other sweet

12:38 products than cheese.

12:40 I understand them a bit.

12:42 Pink flames don't stay in the water

12:44 on a dough

12:46 to keep it warm.

12:48 It's just a simpler way

12:50 to provide less effort.

12:52 It's exhausting for us

12:54 to stand on one leg.

12:56 But for them,

12:58 it's the most stable position

13:00 depending on their anatomy.

13:02 This pose

13:04 doesn't require any muscle work.

13:06 One of the most popular beliefs

13:08 is that ostriches

13:10 put their heads in the ground

13:12 when they are scared.

13:14 Before, scientists thought

13:16 that ostriches were not very smart

13:18 because they hid their heads

13:20 without realizing

13:22 that the rest of their huge body

13:24 was visible to everyone's eyes.

13:26 In fact, ostriches do it

13:28 when they want to swallow

13:30 sand and pebbles

13:32 to stimulate their digestion

13:34 or simply to turn the eggs

13:36 they laid in their nests.

13:38 And technically,

13:40 they don't even bury their heads

13:42 but put them near the ground.

13:44 If they put their heads in the sand,

13:46 poor animals couldn't breathe.

13:48 And there's no reason to think

13:50 that ostriches are fearful.

13:52 Like many other animals,

13:54 they will run away

13:56 if they see a human.

13:58 What do you think

14:00 is the biggest thing

14:02 a blue whale can swallow?

14:04 I'm talking about the biggest animal

14:06 ever on our planet.

14:08 It can be up to 30 meters long

14:10 and weigh 200 tons.

14:12 Its heart is as big as a car

14:14 and its tongue can weigh

14:16 as much as an elephant.

14:18 We can easily imagine

14:20 a blue whale swallowing cars,

14:22 people and even small boats.

14:24 The biggest thing

14:26 it can swallow is a foam pump.

14:28 Its throat can fit

14:30 a small salad plate.

14:32 Whales feed on small fish,

14:34 plankton and crustaceans.

14:36 So they don't need

14:38 a huge throat.

14:40 However, we couldn't survive

14:42 the gastric juice of a blue whale.

14:44 It would finish us in 15 seconds.

14:46 It's about the time we could spend

14:48 in space in combination.

14:50 Dromedaries don't store water

14:52 in their bones.

14:54 These animals can resist

14:56 extreme conditions.

14:58 If they can survive

15:00 by only drinking once

15:02 every 8 to 10 days,

15:04 it's not because they have

15:06 a secret water reserve.

15:08 When they drink,

15:10 they can swallow

15:12 200 liters of water at once.

15:14 This is 30% of their body weight,

15:16 the amount they can lose

15:18 by dehydration.

15:20 The oxygen inhaled by dromedaries

15:22 could make them lose too much water

15:24 because it evaporates in their lungs.

15:26 However, they use

15:28 their fat as a nutritional

15:30 energy source.

15:32 This helps them survive in arid regions

15:34 and in times of poverty.

15:36 Ants don't really

15:38 breathe with their long muzzle.

15:40 This giant animal

15:42 has a very long tongue

15:44 that can reach 60 cm long.

15:46 It looks like a spaghetti

15:48 and is covered with spiny hooks

15:50 and sticky saliva

15:52 that traps ants.

15:54 It can spit it out

15:56 up to 160 times per minute,

15:58 which means it can eat

16:00 up to 20,000 insects in one day.

16:02 It opens its jaws with its claws

16:04 and finishes its work with its tongue.

16:06 It has no teeth,

16:08 so it swallows its meal with its mouth.

16:10 Cinema could give you

16:12 a false sense of security

16:14 about dinosaurs.

16:16 But being still in front of a T-Rex

16:18 won't save you.

16:20 Pretending that the king of dinosaurs

16:22 had a very bad eyesight

16:24 is just a myth.

16:26 It could see as well as today's raptors.

16:28 It had an excellent perception

16:30 of the depth,

16:32 a capacity present in eagles

16:34 and current hawks.

16:36 And even if by miracle

16:38 it didn't see you or thought

16:40 you were just a small shrub

16:42 because you were still,

16:44 the best option would be to run

16:46 because the T-Rex is not as fast

16:48 as scientists thought

16:50 who estimated its top speed

16:52 at 50 km/h.

16:54 In view of its anatomy,

16:56 it could barely reach 20 km/h.

16:58 Running faster

17:00 would have caused it serious bone injuries.

17:02 But that didn't stop it

17:04 from reigning over the animal world

17:06 because many dinosaurs

17:08 were slower than it.

17:10 So it had no trouble feeding.

17:12 Another idea claimed

17:14 that eagles can turn their heads

17:16 360 degrees.

17:18 Their rotation angle

17:20 is limited to 270 degrees

17:22 in each direction

17:24 which gives them an amplitude

17:26 of movement of 540 degrees.

17:28 Don't worry if you touch a butterfly's wings.

17:30 It won't lose its ability to fly.

17:32 It will survive despite the ideas

17:34 claimed.

17:36 Butterfly's wings have scales.

17:38 When you touch them,

17:40 they are not necessarily serious

17:42 because they detach naturally.

17:44 It is thanks to these scales

17:46 that butterflies can sometimes escape

17:48 if they are stuck in a spider's web.

17:50 in a spider web.

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