True Facts: Snake and Lizard Tongues

Nov 17, 2020
814 340 Views

Dr. Kurt Schwenk
It was a pretty incredible gift to be able to work with Kurt on this episode. His work spans decades and it took multiple tries to understand it in a way that could be put together in a narrative. I am very grateful for all of his time, warmth and generosity. I had to leave many, many wonderful pieces of research and factoids out due to time constraints but I would urge any of you that are interested to dive deeper into his work.
His colleagues Dr. William G. Ryerson, Ms. Amanda E. Hewes and
Ms. Sara Horwitz contributed a great deal to some of the research that I mentioned.
Dr. Margaret Rubega ( deserves thanks for introducing me to Kurt in the first place.

Additional footage licensed from:
Envato Elements

  • I recognize your voice from dear kitten! Or you may not be the person who voiced/narrated in it... sorry if you weren’t, you got a very nice voice and some very funny content here though friend XD

    Torti TongueTorti TongueHour ago
  • The end card terrifies me

    Fluffy waffles fw.Fluffy waffles fw.2 hours ago
  • Is this the kind of page where I can say "I'm always a slut for fluid dynamics" and people will, like, Get It? Love the in-depth sciencey ness of this video, it's a real treat, and thank you Dr. Schwenk!

    pluspipingpluspiping6 hours ago
  • Shit, this was seriosly educational 😅

    Martin FrimanMartin Friman6 hours ago
  • The sound at 8:31got stuck halfway between my hippocampus and neo-cortex and is now on infinite loop.

    FedBikerFedBiker8 hours ago
  • lmfao !!!! factfull and funny !

    R3DLiFER3DLiFE9 hours ago
  • 'I'll give an arm and a leg to be the best at it' is now what I'm going to refer to whenever I talk about snakes.

    Greer McNallyGreer McNally9 hours ago
  • "When humans do this it's called an HR violation"🤣

    DeathLotusDeathLotus10 hours ago
  • Next time I see a snake I'm going to ask it what that tongue do😂😂

    charizard4321charizard432112 hours ago

    Muneerah AdamsMuneerah Adams12 hours ago
  • Please do a video on the small and well named bird called a bushtit...

    Kevin ParksKevin Parks13 hours ago
  • “When humans do this, it’s called HR Violation” The ending: 10:18

    rc casanorc casano13 hours ago
  • When human do its called HR [human rights] violations! Hahahaha LoL

    Rafael PasitoRafael Pasito17 hours ago
  • Where is teddy now?

    Twisty99Twisty9920 hours ago
  • "Tongue-Ball"

    MsSaraKirkpatrickMsSaraKirkpatrickDay ago
  • Dammit, Jerry! Get it right! One minute in, and we're already yelling at you MULTIPLE TIMES!

    MsSaraKirkpatrickMsSaraKirkpatrickDay ago
  • Teddy is still alive?

    • Probably not

      Twisty99Twisty9920 hours ago
  • God I want to go to therapy so I can call the therapist a brain witch despite their repeated insistence I stop.

    Stormy DavisStormy DavisDay ago
  • 8:30 I rewound and even slowed it down me and the misses are dying and also copying it all day going randomly.....BLBMBMBLL

    MuglorgrimlockableMuglorgrimlockableDay ago
  • This tongue will blow your mind. That’s what she said

    Christian TerryChristian TerryDay ago
  • You should make videos for whales and sharks

    codeman7055codeman7055Day ago
  • All these lizards give me Schwenks

    S CO POS CO PODay ago
  • Use this as a "I was today years old when I found out worm lizards were a thing" button.

    Jesus jiu-jitsuJesus jiu-jitsuDay ago
  • That mouth at the end was traumatizing

    Asani WilliamsAsani WilliamsDay ago
  • “When humans do this it’s called an HR violation” 😂😂😂😂😂😂

    Peter MeullerPeter MeullerDay ago
  • “Smyooth”

    Hunter ClwminsomHunter ClwminsomDay ago
  • I self-identify as a smarty nipple

    Anna MishonovaAnna MishonovaDay ago
  • wheres mr teddy

    PumkinnPumkinnDay ago
  • HR violation 🤣🤣💀💀

    Jose ArellanoJose ArellanoDay ago
  • HR violation :DDDD

    TheOnlyRealTapirTheOnlyRealTapirDay ago
  • 9:35

    Samuel VargaSamuel VargaDay ago
  • 9:25

    Samuel VargaSamuel VargaDay ago
  • 6:58

    Samuel VargaSamuel VargaDay ago
  • Why did i click while i was eating, i follow him since the start, i should have known better.

    Rukyura MykyRukyura MykyDay ago
  • It will blow something, but it's not my mind.

    Mr. WMr. WDay ago
  • I found someone trying to bite your style... but no one will ever say ... Baby's like you baby babys... that's what zefrank1 do......

    kl Chicagokl ChicagoDay ago
    • 5:27 on the video link

      kl Chicagokl ChicagoDay ago

      kl Chicagokl ChicagoDay ago
  • I love your videos. I learn things and they make me laugh.

    davidbwadavidbwa2 days ago
  • I need evolution to wink at the rest of 2020 and all of 2021 please 🧡

    Butacup PucatubButacup Pucatub2 days ago
  • 😂😂😂 oh Zefrank, both hilarious and education, I nearly peed myself laughing

    NouraJNouraJ2 days ago
  • Can you make a true facts video about kiwis? The bird not the fruit XD

    EternalBear AnimatesEternalBear Animates2 days ago
  • "Smyoothe"

    Iverson Paul AlayIverson Paul Alay2 days ago
  • During this little snake rave

    Codeman785Codeman7852 days ago
  • Could you da a video about the weirdest species of all... the HUMAN?

    Mo NaMo Na2 days ago
  • How can such a simple animal be so complicated

    harrison simharrison sim2 days ago
  • Brain witches lols, that's a far more accurate job title for psychiatrists.

    Johnny WoodsJohnny Woods2 days ago
  • I can't believe this is the same guy who did teddy has an operation

    Owain ThomasOwain Thomas2 days ago
  • the way he describes things is the most realistic i have ever seen

    happy manhappy man2 days ago
  • This is how a healthy bon bon looks like

    alex balfanzalex balfanz2 days ago
  • So that's what my tongue and lower lip look like slowed down when I make fart noises...

    fds fdsfds fds2 days ago
  • This one is absolute wall to wall 24-carat GOLD. A masterpiece. Just wonderful. Love your work, Ze.

    Massage Dot MelbourneMassage Dot Melbourne2 days ago
  • No animals were harmed during the filming of this video but they died because of laughter 😂😂

    d_piyushd_piyush2 days ago
  • Ok that at the end was just excessive.

    futsk01futsk012 days ago
  • These documentaries are so fukking awsome!

    Chris MacLeanChris MacLean2 days ago
  • "It's called an HR violation." That one got me good.

    Travis BTravis B2 days ago
  • I hate this, and I love this

    Kevin PerryKevin Perry3 days ago
  • I’ve watched this about a dozen times, it’s just so great

    deanthebean gamingdeanthebean gaming3 days ago
  • Zerfrank: True facts about the Tyrannosaurus Shreks... ...oh wait hold on That’s a typo... True facts about the Tyranosaurus Sex... Jerry is this another typo? Jerry: ... Zerfrank: No? What do you mean it’s your browser history give me the actual script.

    Nothsa RekcapNothsa Rekcap3 days ago
  • 6:17 sorry, still here, and now I have subscribed

    DevilofetherDevilofether3 days ago
  • "It's sort of like they can smell in stereo." This is absolutely brilliant! As a veterinarian i'll always remember that humorous phrase in my lectures!

    Higor AraújoHigor Araújo3 days ago
  • the outro is epic

    Long HoangLong Hoang3 days ago
  • OK like if you stuck out your tongue and tired to flick it up and down when he said that hahaha

    Andrew PearsonAndrew Pearson3 days ago
  • hey remember ur teddy bear operation vid, haha. i watched that when i was like 6 👋 anyway hello again sir

    Meru MeMeru Me3 days ago
  • The human tongue was the most disturbing

    Timi HazeTimi Haze3 days ago
  • I had to pause midway through because I laughed so hard I spit my noodles onto my computer.

    Kerry GodboutKerry Godbout3 days ago
  • Dude I love your videos. I formative and extremely hiladious

    rasheed gregoryrasheed gregory3 days ago
  • "...HR violation." You are a funny man. xD

    Angela BartlettAngela Bartlett3 days ago
  • I love this man and his content with every fiber of my being

    DiadorimDiadorim3 days ago
  • One of the best videos that came out on my birthday

    MönkeyMönkey3 days ago
  • S.T.E.R.E.O. TONGUES!!!

    Michal ŠepsMichal Šeps3 days ago
  • From now on I'm calling psychiatrists "brain witches"

    yashuayashua3 days ago
  • Butt molecules in the air

    Sergio Di MartinoSergio Di Martino3 days ago
  • "Can't fool me, Brain Witch!" 🤣

    Sam ESam E3 days ago
  • How many of you actually tried flicking your tongue in the air?

    DoomFinger511DoomFinger5113 days ago
  • I can never go back to normal docs. I have been spoiled by zefrank and the art of the info doc comedey.

    nonya businessnonya business4 days ago
  • Can't fool me, brain witch!

    Rusty ShakelfordRusty Shakelford4 days ago
  • #Thankmas

    DiscoChixifyDiscoChixify4 days ago
  • Oh man this is one of the best ones yet! BRAINWITCH, Seriously how does he so accurately and succinctly describe that profession?!?! LOVE IT

    Rhett ShumwayRhett Shumway4 days ago
  • smewth

    CarbohighstakesCarbohighstakes4 days ago
  • That ending shot was disturbing in many ways...

    bocoy noiubocoy noiu4 days ago
  • This tongue will blow up your bicycle tires.

    Hookie DooHookie Doo4 days ago
  • "Deep throating a squirrel's butt" Aaaallright, that's enough of that for today.

    White Fire ProductionsWhite Fire Productions4 days ago
  • I've own snakes, monitors and other lizards... Men should take notes!!

    Lady TempestLady Tempest4 days ago
    • @bocoy noiu great way to get a raise. Pun intended!!

      Lady TempestLady Tempest3 days ago
    • When human do this it's called an HR violation 😂😂😂😂

      bocoy noiubocoy noiu4 days ago
  • hehe butt molecules

    naik naiknaik naik4 days ago
  • He’s back

    Jack DavenportJack Davenport4 days ago
  • All shag carpets are shag carpets of doom.

    Jarred UysJarred Uys4 days ago
  • the last 10 seconds.......scarred forever

    adrian427adrian4274 days ago
  • Pls do a colab with David Attenborough.

    DeadpoolDeadpool4 days ago
  • Why is no one talking about the end-

    sally castersally caster4 days ago
  • But why do the snake do? Dr. Schwenk know why!

    Sarafina DeliriumSarafina Delirium4 days ago
  • My cat enjoyed your lizard/snake tongue video too XD

    Adelphos89Adelphos894 days ago
  • XD awesome

    Bark BarkBark Bark4 days ago
  • One of my favorite videos you guys have ever done! The science and jokes in this one are so good 😂

    Kelsi Van DammeKelsi Van Damme4 days ago
  • Jobs that no-one wants #5438: product manager at Evolution, Inc. "Are you actually shitting me with this? All our users said they needed some way of cleaning and protecting their eyeballs. So we gave them Eyelid v1.0. Now this one user, Gordon effing Gecko, says "naah, fam - I don't want eyelids. I wanna lick my eyeballs clean." Sure, pal - we'll put it in the backlog.

    T JT J4 days ago
  • after watching 5 of your videos, i realised you made research results interesting and fascinating for learning. also there is your narrating skill and the fact thats its funny.

    Karan AryaKaran Arya4 days ago
  • Can you make a video about the blobfish

    Alaster CuteAlaster Cute4 days ago
  • Stop being funny and smart at the same time, that’s not how it’s meant to work.

    Blizzardfire 79Blizzardfire 794 days ago
  • When human do this it's called an HR violation 😂😂😂😂

    Zach ZhangZach Zhang4 days ago
  • 1:33 Monitor lizard who did it without losing their limbs: Listen here youths, sometimes you have to be stubborn to get the best of the two worlds. Sneks: What Boomer. Monitors: Bruh.

    Shasvin PuvanesvaranShasvin Puvanesvaran4 days ago
  • Never get into an elevator with a bunch of snakes. If you fart they will all know it was you. Noted.

    Banana JuntaBanana Junta4 days ago
  • Smarty nipple lol

    Banana JuntaBanana Junta4 days ago