How Your Dog's Nose Knows So Much | Deep Look

  • تم نشره في 2019/02/26
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    Dogs have a famously great sense of smell, but what makes their noses so much more powerful than ours? They're packing some sophisticated equipment inside that squishy schnozz.
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    DEEP LOOK is a ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Explore big scientific mysteries by going incredibly small.
    --- How much more powerful is a dog’s sense of smell compared to a human?
    According to one estimate, dogs are 10,000-100,000 times more sensitive to smell than humans. They have about 15 times more olfactory neurons that send signals about odors to the brain. The neurons in a dog’s nose are spread out over a much larger and more convoluted area allowing them more easily decipher specific chemicals in the air.
    --- Why are dog noses wet?
    Dog noses secrete mucus which traps odors in the air and on the ground. When a dog licks its nose, the tongue brings those odors into the mouth allowing it to sample those smells. Dogs mostly cool themselves by panting but the mucus on their noses and sweat from their paws cool through evaporation.
    --- Why do dog nostrils have slits on the side?
    Dogs sniff about five times per second. The slits on the sides allows exhaled air to vent towards the sides and back. That air moving towards the back of the dog creates a low air pressure region in front of it. Air from in front of the dog rushes in to fill that low pressure region. That allows the nose to actively bring odors in from in front and keeps the exhaled air from contaminating new samples.
    ---+ Read the entire article on KQED Science:
    ---+ For more information:
    The Odor Navigation Project funded NSF Brain Initiative
    Jacobs Lab of Cognitive Biology at UC Berkeley
    Ecological Fluid Dynamics Lab at University of Colorado Boulder
    The fluid dynamics of canine olfaction: unique nasal airflow patterns as an explanation of macrosmia (Brent A. Craven, Eric G. Paterson, and Gary S. Settles)
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    ---+ Shoutout!
    🏆Congratulations 🏆 to Branden W., Edison Lewis, Vampire Wolf, Haithem Ghanem and Droidtigger who won our GIF CHALLENGE over at the Deep Look Community Tab, by identifying the special region in the canine skull which houses much of the smell ability:
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  • علوم وتكنولوجياعلوم وتكنولوجيا

تعليقات • 785

  • Missy Lee
    Missy Lee 5 ساعات قبل

    But dogs noses are amazing. My jack Russell's start pulling on their walk when they have smelt a dog has jus passed its mad ha

  • Missy Lee
    Missy Lee 5 ساعات قبل

    How come we get choked to death by their eggy farts but my dogs jus stay there relaxing 😂😂

  • Chris Dulpina
    Chris Dulpina 2 أيام قبل

    Wow.. Love dogs til they take my breath away

  • Coockie_ Monster
    Coockie_ Monster 2 أيام قبل


    Or not -_-

  • canterlevi
    canterlevi 3 أيام قبل +1

    How does the dog know that’s the scent she’s supposed to follow? How does she not get distracted by a more interesting smell?

  • immasoxfanbaby
    immasoxfanbaby 4 أيام قبل

    Dogs are really nosey.. I'm getting a dog nose replacement. So I can smell money

  • dee jay
    dee jay 4 أيام قبل +1

    I love my dog..she's the best.. she's always at my side..

  • Nala the Nugget Dog
    Nala the Nugget Dog 5 أيام قبل

    My mom has nose structures like the dog..

  • Linzi Hamill
    Linzi Hamill 7 أيام قبل


  • Pradeep Ramakrishnan
    Pradeep Ramakrishnan 8 أيام قبل

    Can’t just pass by scrolling down these videos. One of the Best channel for a nature enthusiast like me. Great work team. Keep going....👍

  • Nenet Dela Puerta
    Nenet Dela Puerta 10 أيام قبل

    Watching Deep Look's every video makes me feel smart tbh, like you gain small knowledge every video!

  • Naga Pandian
    Naga Pandian 15 أيام قبل

    Is it just me or have I always though nostrils look like miniature eyes.

  • Jake C
    Jake C 17 أيام قبل

    Nose knows

  • purrfectluck AJPW
    purrfectluck AJPW 17 أيام قبل


  • jkz2862
    jkz2862 17 أيام قبل

    When the narrator said "yes she is" at 0:45, I got excited

  • Yumeng Taing
    Yumeng Taing 18 أيام قبل

    do all dog have this ability?

  • Pomegranate
    Pomegranate 18 أيام قبل

    I love the plastic look of doggos nose.

  • Dori Weishaar
    Dori Weishaar 20 أيام قبل

    "Yes she is" lol. 🐕
    Much as we love Deep Look in our house, it just wouldn't be the same without Lauren, lol

  • Adomay Ceballos
    Adomay Ceballos 21 أيام قبل

    Some females also love that their doggy can smell that 🐱👀 and lick it good

  • ‘Murica 1776
    ‘Murica 1776 21 أيام قبل

    Who has a good olfactory recess? Who? WHO? YES! YES YOU DO GOOD GIRL

  • weeduy
    weeduy 21 أيام قبل

    The snout almost *nose* too much

    hahahahahahahaha hahahahahahahaha I don't have a life

  • LuQman Hakim
    LuQman Hakim 21 أيام قبل +1

    Tell us what happen if dog lick human

    • Adomay Ceballos
      Adomay Ceballos 21 أيام قبل

      LuQman Hakim right specially a girls 🐱

  • Alyssa Villavicencio
    Alyssa Villavicencio 22 أيام قبل +1

    the narrator’s puppy voice gets to me every time 🤣

  • E P
    E P 22 أيام قبل +1

    Google Bobbie the Wonder Dog. He got lost and covered 2,551 miles on his own to return home.

  • OrganicChemistry2
    OrganicChemistry2 24 أيام قبل +1

    Who else was tempted to touch their screen in order to Boop the Snoot?

  • Raphael Rodriguez
    Raphael Rodriguez 25 أيام قبل

    S N O R F

  • Gibraltar
    Gibraltar 27 أيام قبل

    Sven has 1000hp isntead of super smell

  • GachaTuder Moon
    GachaTuder Moon أشهر قبل

    Omg! She so Cute!

  • LordVader
    LordVader أشهر قبل


  • Fenix Minerva
    Fenix Minerva أشهر قبل


  • OneRandomYoutuber
    OneRandomYoutuber أشهر قبل +1

    Who else like touching their dogs nose when its asleep? It’s like so dry but I love it! 🐶

  • Jose Mercado
    Jose Mercado أشهر قبل


  • Syphon Gamer
    Syphon Gamer أشهر قبل

    Ok let's be real.
    I know im not the only one who tried sniffing 5 time a secound but then got light headed.

  • Toasty Toast
    Toasty Toast أشهر قبل +1

    She protecc
    She tracc
    But most importantly...

    She bring hiker bacc

  • 으아아아아아아아아아

    The title is so werid to pronounce. How your 'dog's' 'nose' 'knows' so much? It's like I'm singing

  • Odalys G
    Odalys G أشهر قبل

    cats are still cool

  • WiseEyes
    WiseEyes أشهر قبل +1

    Wow how have I never come across this channel before?!?!

  • Vishnu Prasad
    Vishnu Prasad أشهر قبل

    She prottec
    She attac
    But most importantly, she can smell your tracc from a week bacc

  • wickandde
    wickandde أشهر قبل

    Omg why are they so cute 😭

  • Shuochen Wang
    Shuochen Wang أشهر قبل

    Now the question on why I like to touch dog nostrils...

  • Funky Monkey
    Funky Monkey 2 أشهر قبل

    Boop 🥰

  • Harsha JE
    Harsha JE 2 أشهر قبل

    This is one of THE BEST channels with views MORE THAN THE Subscribers

  • blank blank
    blank blank 2 أشهر قبل

    She was trying to boop us with her nose in the end

  • _Blekz-OP_
    _Blekz-OP_ 2 أشهر قبل +1

    That's cute

  • Forty Nut
    Forty Nut 2 أشهر قبل

    Imagine if a cat tried to do this...

  • John Serrano
    John Serrano 2 أشهر قبل

    Is it just me or I seen a tick in 2:50

  • Layne Frazier
    Layne Frazier 2 أشهر قبل +1

    What about cats?

  • *LaDY* *L0VE*
    *LaDY* *L0VE* 2 أشهر قبل

    I STRONGLY disliked this VIDEO. This is the VERY first video from this channel that I didn't enjoy at ALL. 🙄😴

  • Hazztech
    Hazztech 2 أشهر قبل


  • unavailable
    unavailable 2 أشهر قبل

    Is there a reason why not using blood hounds since they have the best sense of smell of dogs??

  • Leo Ix
    Leo Ix 2 أشهر قبل

    Zinka is a paid actress.
    Be honest.

  • Reed Pearson
    Reed Pearson 2 أشهر قبل +1

    They have snoots for snoffing and booping

  • memeless boi vlogs
    memeless boi vlogs 2 أشهر قبل

    I’m adding dogs into my time machine

  • Guito Dae
    Guito Dae 2 أشهر قبل +3

    Hit the like button to boop the snoop

  • my name is Albert and im an albertraus

    "Champion sniffer"

  • Andi's Random Channel Videos
    Andi's Random Channel Videos 2 أشهر قبل


  • Simon The 2T22A
    Simon The 2T22A 2 أشهر قبل

    Dog nose wet
    Looks like a sausage

  • billpuppies
    billpuppies 2 أشهر قبل

    These need to be called "Lighter Look." That was several minutes of playing with a search dog, with only a few seconds of anything beyond elementary info.

  • whilliam.n
    whilliam.n 2 أشهر قبل


  • blipco5
    blipco5 3 أشهر قبل

    I always wonder what a dog is thinking when it sniffs my crotch.