Айбандар жана Жаныбарлар

True Facts: Snake and Lizard Tongues

SHIRTS: ze-true-store.myshopify.com/
PATREON: www.patreon.com/truefacts/
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 (rubegalab.uconn.edu/) deserves thanks for introducing me to Kurt in the first place.

Additional footage licensed from:
Envato Elements


  1. Twisty99


    6 мүнөт мурун

    Where is teddy now?

  2. MsSaraKirkpatrick


    4 саат мурун


  3. MsSaraKirkpatrick


    4 саат мурун

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

  4. GAME-X AD


    4 саат мурун

    Teddy is still alive?

    • Twisty99


      6 мүнөт мурун

      Probably not

  5. Stormy Davis

    Stormy Davis

    5 саат мурун

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

  6. Muglorgrimlockable


    6 саат мурун

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

  7. Christian Terry

    Christian Terry

    7 саат мурун

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

  8. codeman7055


    10 саат мурун

    You should make videos for whales and sharks

  9. S CO PO

    S CO PO

    11 саат мурун

    All these lizards give me Schwenks

  10. Jesus jiu-jitsu

    Jesus jiu-jitsu

    12 саат мурун

    Use this as a "I was today years old when I found out worm lizards were a thing" button.

  11. Asani Williams

    Asani Williams

    14 саат мурун

    That mouth at the end was traumatizing

  12. Peter Meuller

    Peter Meuller

    14 саат мурун

    “When humans do this it’s called an HR violation” 😂😂😂😂😂😂

  13. Hunter Clwminsom

    Hunter Clwminsom

    15 саат мурун


  14. Anna Mishonova

    Anna Mishonova

    16 саат мурун

    I self-identify as a smarty nipple

  15. Pumkinn


    17 саат мурун

    wheres mr teddy

  16. Jose Arellano

    Jose Arellano

    18 саат мурун

    HR violation 🤣🤣💀💀

  17. TheOnlyRealTapir


    19 саат мурун

    HR violation :DDDD

  18. Samuel Varga

    Samuel Varga

    20 саат мурун


  19. Samuel Varga

    Samuel Varga

    20 саат мурун


  20. Samuel Varga

    Samuel Varga

    20 саат мурун


  21. Rukyura Myky

    Rukyura Myky

    21 саат мурун

    Why did i click while i was eating, i follow him since the start, i should have known better.

  22. Mr. W

    Mr. W

    23 саат мурун

    It will blow something, but it's not my mind.

  23. kl Chicago

    kl Chicago

    Күн мурун

    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 Chicago

      kl Chicago

      Күн мурун

      5:27 on the video link

    • kl Chicago

      kl Chicago

      Күн мурун


  24. davidbwa


    Күн мурун

    I love your videos. I learn things and they make me laugh.

  25. Butacup Pucatub

    Butacup Pucatub

    Күн мурун

    I need evolution to wink at the rest of 2020 and all of 2021 please 🧡

  26. NouraJ


    Күн мурун

    😂😂😂 oh Zefrank, both hilarious and education, I nearly peed myself laughing

  27. EternalBear Animates

    EternalBear Animates

    Күн мурун

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

  28. Iverson Paul Alay

    Iverson Paul Alay

    Күн мурун


  29. Codeman785


    Күн мурун

    During this little snake rave

  30. Mo Na

    Mo Na

    Күн мурун

    Could you da a video about the weirdest species of all... the HUMAN?

  31. harrison sim

    harrison sim

    Күн мурун

    How can such a simple animal be so complicated

  32. Johnny Woods

    Johnny Woods

    Күн мурун

    Brain witches lols, that's a far more accurate job title for psychiatrists.

  33. Owain Thomas

    Owain Thomas

    Күн мурун

    I can't believe this is the same guy who did teddy has an operation

  34. happy man

    happy man

    Күн мурун

    the way he describes things is the most realistic i have ever seen

  35. alex balfanz

    alex balfanz

    Күн мурун

    This is how a healthy bon bon looks like

  36. fds fds

    fds fds

    Күн мурун

    So that's what my tongue and lower lip look like slowed down when I make fart noises...

  37. Massage Dot Melbourne

    Massage Dot Melbourne

    Күн мурун

    This one is absolute wall to wall 24-carat GOLD. A masterpiece. Just wonderful. Love your work, Ze.

  38. d_piyush


    Күн мурун

    No animals were harmed during the filming of this video but they died because of laughter 😂😂

  39. futsk01


    2 күн мурун

    Ok that at the end was just excessive.

  40. Chris MacLean

    Chris MacLean

    2 күн мурун

    These documentaries are so fukking awsome!

  41. Travis B

    Travis B

    2 күн мурун

    "It's called an HR violation." That one got me good.

  42. Kevin Perry

    Kevin Perry

    2 күн мурун

    I hate this, and I love this

  43. deanthebean gaming

    deanthebean gaming

    2 күн мурун

    I’ve watched this about a dozen times, it’s just so great

  44. Nothsa Rekcap

    Nothsa Rekcap

    2 күн мурун

    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.

  45. Devilofether


    2 күн мурун

    6:17 sorry, still here, and now I have subscribed

  46. Higor Araújo

    Higor Araújo

    2 күн мурун

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

  47. Long Hoang

    Long Hoang

    2 күн мурун

    the outro is epic

  48. Andrew Pearson

    Andrew Pearson

    2 күн мурун

    OK like if you stuck out your tongue and tired to flick it up and down when he said that hahaha

  49. Meru Me

    Meru Me

    2 күн мурун

    hey remember ur teddy bear operation vid, haha. i watched that when i was like 6 👋 anyway hello again sir

  50. Timi Haze

    Timi Haze

    2 күн мурун

    The human tongue was the most disturbing

  51. Kerry Godbout

    Kerry Godbout

    2 күн мурун

    I had to pause midway through because I laughed so hard I spit my noodles onto my computer.

  52. rasheed gregory

    rasheed gregory

    2 күн мурун

    Dude I love your videos. I formative and extremely hiladious

  53. Angela Bartlett

    Angela Bartlett

    2 күн мурун

    "...HR violation." You are a funny man. xD

  54. Diadorim


    2 күн мурун

    I love this man and his content with every fiber of my being

  55. Mönkey


    2 күн мурун

    One of the best videos that came out on my birthday

  56. Michal Šeps

    Michal Šeps

    2 күн мурун

    S.T.E.R.E.O. TONGUES!!!

  57. yashua


    3 күн мурун

    From now on I'm calling psychiatrists "brain witches"

  58. Sergio Di Martino

    Sergio Di Martino

    3 күн мурун

    Butt molecules in the air

  59. Sam E

    Sam E

    3 күн мурун

    "Can't fool me, Brain Witch!" 🤣

  60. DoomFinger511


    3 күн мурун

    How many of you actually tried flicking your tongue in the air?

  61. nonya business

    nonya business

    3 күн мурун

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

  62. Rusty Shakelford

    Rusty Shakelford

    3 күн мурун

    Can't fool me, brain witch!

  63. DiscoChixify


    3 күн мурун

    #Thankmas kgkey.info/block/upZ-mNXWebV-z6g/video.html

  64. Rhett Shumway

    Rhett Shumway

    3 күн мурун

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

  65. Carbohighstakes


    3 күн мурун


  66. bocoy noiu

    bocoy noiu

    3 күн мурун

    That ending shot was disturbing in many ways...

  67. Hookie Doo

    Hookie Doo

    3 күн мурун

    This tongue will blow up your bicycle tires.

  68. White Fire Productions

    White Fire Productions

    3 күн мурун

    "Deep throating a squirrel's butt" Aaaallright, that's enough of that for today.

  69. Lady Tempest

    Lady Tempest

    3 күн мурун

    I've own snakes, monitors and other lizards... Men should take notes!!

    • Lady Tempest

      Lady Tempest

      3 күн мурун

      @bocoy noiu great way to get a raise. Pun intended!!

    • bocoy noiu

      bocoy noiu

      3 күн мурун

      When human do this it's called an HR violation 😂😂😂😂

  70. naik naik

    naik naik

    3 күн мурун

    hehe butt molecules

  71. Jack Davenport

    Jack Davenport

    3 күн мурун

    He’s back

  72. Jarred Uys

    Jarred Uys

    3 күн мурун

    All shag carpets are shag carpets of doom.

  73. adrian427


    3 күн мурун

    the last 10 seconds.......scarred forever

  74. Deadpool


    3 күн мурун

    Pls do a colab with David Attenborough.

  75. sally caster

    sally caster

    3 күн мурун

    Why is no one talking about the end-

  76. Sarafina Delirium

    Sarafina Delirium

    3 күн мурун

    But why do the snake do? Dr. Schwenk know why!

  77. Adelphos89


    3 күн мурун

    My cat enjoyed your lizard/snake tongue video too XD

  78. Bark Bark

    Bark Bark

    3 күн мурун

    XD awesome

  79. Kelsi Van Damme

    Kelsi Van Damme

    3 күн мурун

    One of my favorite videos you guys have ever done! The science and jokes in this one are so good 😂

  80. T J

    T J

    3 күн мурун

    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.

  81. Karan Arya

    Karan Arya

    3 күн мурун

    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.

  82. Alaster Cute

    Alaster Cute

    3 күн мурун

    Can you make a video about the blobfish

  83. Blizzardfire 79

    Blizzardfire 79

    3 күн мурун

    Stop being funny and smart at the same time, that’s not how it’s meant to work.

  84. Zach Zhang

    Zach Zhang

    3 күн мурун

    When human do this it's called an HR violation 😂😂😂😂

  85. Shasvin Puvanesvaran

    Shasvin Puvanesvaran

    3 күн мурун

    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.

  86. Banana Junta

    Banana Junta

    4 күн мурун

    Never get into an elevator with a bunch of snakes. If you fart they will all know it was you. Noted.

  87. Banana Junta

    Banana Junta

    4 күн мурун

    Smarty nipple lol

  88. Moumanti Podder

    Moumanti Podder

    4 күн мурун

    "I'll give an arm and a leg to be the best at it"... and they literally did just that :-P :-D

  89. Dan Velarde

    Dan Velarde

    4 күн мурун

    ohhh this was so goooddd

  90. dcoog anml

    dcoog anml

    4 күн мурун

    Jerry's script remains wild. "Jerry, that's not a snake." "No, Jerry, it's not a fetish. When a scientist does it it's an area of interest."

  91. Steven Magasis

    Steven Magasis

    4 күн мурун

    Best yet.

  92. b s

    b s

    4 күн мурун

    Lol I was just talking to my nephew about licking stamps yesterday! Oh how kids will never know. I love when I run across this channel.

  93. VidralliaArchives


    4 күн мурун

    "But the snake ancestor pulled evolution aside and said, 'I'll give an arm and a leg to be the best at it.'" I see what you did there.

    • dcoog anml

      dcoog anml

      4 күн мурун

      I could stomach all the sticky mucous riddled freak tongues caressing maggots like sweet candy, but that outro was just grotesque!

  94. Moises Castro

    Moises Castro

    4 күн мурун

    Can you do a guinea pig video next plzzzzz.

  95. Venu Ganga

    Venu Ganga

    4 күн мурун

    I still love zefrank and this channel will never get old

  96. Hritvick Sen

    Hritvick Sen

    4 күн мурун

    Is that ZeFrank in the end? If yes, in his own words, 'quite floppy, floppy!'

  97. Mrozek


    4 күн мурун

    4:23 I tried it, now my teacher thinks I'm a perv, thx bro

  98. Darth Tater

    Darth Tater

    4 күн мурун

    I love the longer format Frank. Day One Duck Wang Gang

  99. Metal Bear08

    Metal Bear08

    4 күн мурун

    How have I learned something but also feel like i have learned nothing at the same time

  100. Sir Moriarty

    Sir Moriarty

    4 күн мурун

    I was today years old when I found out worm lizards are a thing