True Facts: Snake and Lizard Tongues


806K views24

    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

    Published on 12 days ago


    1. Twisty99

      Where is teddy now?

    2. MsSaraKirkpatrick


    3. MsSaraKirkpatrick

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

    4. GAME-X AD

      Teddy is still alive?

      1. Twisty99

        Probably not

    5. Stormy Davis

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

    6. Muglorgrimlockable

      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

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

    8. codeman7055

      You should make videos for whales and sharks

    9. S CO PO

      All these lizards give me Schwenks

    10. Jesus jiu-jitsu

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

    11. Asani Williams

      That mouth at the end was traumatizing

    12. Peter Meuller

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

    13. Hunter Clwminsom


    14. Anna Mishonova

      I self-identify as a smarty nipple

    15. Pumkinn

      wheres mr teddy

    16. Jose Arellano

      HR violation 🤣🤣💀💀

    17. TheOnlyRealTapir

      HR violation :DDDD

    18. Samuel Varga


    19. Samuel Varga


    20. Samuel Varga


    21. Rukyura Myky

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

    22. Mr. W

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

    23. kl Chicago

      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......

      1. kl Chicago

        5:27 on the video link

      2. kl Chicago

    24. davidbwa

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

    25. Butacup Pucatub

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

    26. NouraJ

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

    27. EternalBear Animates

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

    28. Iverson Paul Alay


    29. Codeman785

      During this little snake rave

    30. Mo Na

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

    31. harrison sim

      How can such a simple animal be so complicated

    32. Johnny Woods

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

    33. Owain Thomas

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

    34. happy man

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

    35. alex balfanz

      This is how a healthy bon bon looks like

    36. fds fds

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

    37. Massage Dot Melbourne

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

    38. d_piyush

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

    39. futsk01

      Ok that at the end was just excessive.

    40. Chris MacLean

      These documentaries are so fukking awsome!

    41. Travis B

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

    42. Kevin Perry

      I hate this, and I love this

    43. deanthebean gaming

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

    44. Nothsa Rekcap

      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

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

    46. Higor Araújo

      "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

      the outro is epic

    48. Andrew Pearson

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

    49. Meru Me

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

    50. Timi Haze

      The human tongue was the most disturbing

    51. Kerry Godbout

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

    52. rasheed gregory

      Dude I love your videos. I formative and extremely hiladious

    53. Angela Bartlett

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

    54. Diadorim

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

    55. Mönkey

      One of the best videos that came out on my birthday

    56. Michal Šeps

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

    57. yashua

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

    58. Sergio Di Martino

      Butt molecules in the air

    59. Sam E

      "Can't fool me, Brain Witch!" 🤣

    60. DoomFinger511

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

    61. nonya business

      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

      Can't fool me, brain witch!

    63. DiscoChixify


    64. Rhett Shumway

      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


    66. bocoy noiu

      That ending shot was disturbing in many ways...

    67. Hookie Doo

      This tongue will blow up your bicycle tires.

    68. White Fire Productions

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

    69. Lady Tempest

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

      1. Lady Tempest

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

      2. bocoy noiu

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

    70. naik naik

      hehe butt molecules

    71. Jack Davenport

      He’s back

    72. Jarred Uys

      All shag carpets are shag carpets of doom.

    73. adrian427

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

    74. Deadpool

      Pls do a colab with David Attenborough.

    75. sally caster

      Why is no one talking about the end-

    76. Sarafina Delirium

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

    77. Adelphos89

      My cat enjoyed your lizard/snake tongue video too XD

    78. Bark Bark

      XD awesome

    79. Kelsi Van Damme

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

    80. T J

      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

      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

      Can you make a video about the blobfish

    83. Blizzardfire 79

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

    84. Zach Zhang

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

    85. Shasvin Puvanesvaran

      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

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

    87. Banana Junta

      Smarty nipple lol

    88. Moumanti Podder

      "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

      ohhh this was so goooddd

    90. dcoog anml

      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

      Best yet.

    92. b s

      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

      "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.

      1. dcoog anml

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

    94. Moises Castro

      Can you do a guinea pig video next plzzzzz.

    95. Venu Ganga

      I still love zefrank and this channel will never get old

    96. Hritvick Sen

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

    97. Mrozek

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

    98. Darth Tater

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

    99. Metal Bear08

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

    100. Sir Moriarty

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