True Facts: Snake and Lizard Tongues

  Views 812,500


13 days ago

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

Fluffy waffles fw.
Fluffy waffles fw. 3 minutes ago
The end card terrifies me
pluspiping 3 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!
Martin Friman
Martin Friman 3 hours ago
Shit, this was seriosly educational 😅
FedBiker 5 hours ago
The sound at 8:31got stuck halfway between my hippocampus and neo-cortex and is now on infinite loop.
R3DLiFE 6 hours ago
lmfao !!!! factfull and funny !
Greer McNally
Greer McNally 7 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.
DeathLotus 7 hours ago
"When humans do this it's called an HR violation"🤣
charizard4321 9 hours ago
Next time I see a snake I'm going to ask it what that tongue do😂😂
Muneerah Adams
Muneerah Adams 9 hours ago
Kevin Parks
Kevin Parks 10 hours ago
Please do a video on the small and well named bird called a bushtit...
rc casano
rc casano 10 hours ago
“When humans do this, it’s called HR Violation” The ending: 10:18
Rafael Pasito
Rafael Pasito 14 hours ago
When human do its called HR [human rights] violations! Hahahaha LoL
Twisty99 17 hours ago
Where is teddy now?
MsSaraKirkpatrick 21 hour ago
MsSaraKirkpatrick 21 hour ago
Dammit, Jerry! Get it right! One minute in, and we're already yelling at you MULTIPLE TIMES!
GAME-X AD 22 hours ago
Teddy is still alive?
Twisty99 17 hours ago
Probably not
Stormy Davis
Stormy Davis 23 hours ago
God I want to go to therapy so I can call the therapist a brain witch despite their repeated insistence I stop.
Muglorgrimlockable Day 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
Christian Terry
Christian Terry Day ago
This tongue will blow your mind. That’s what she said
codeman7055 Day ago
You should make videos for whales and sharks
S CO PO Day ago
All these lizards give me Schwenks
Jesus jiu-jitsu
Jesus jiu-jitsu Day ago
Use this as a "I was today years old when I found out worm lizards were a thing" button.
Asani Williams
Asani Williams Day ago
That mouth at the end was traumatizing
Peter Meuller
Peter Meuller Day ago
“When humans do this it’s called an HR violation” 😂😂😂😂😂😂
Hunter Clwminsom
Hunter Clwminsom Day ago
Anna Mishonova
Anna Mishonova Day ago
I self-identify as a smarty nipple
Pumkinn Day ago
wheres mr teddy
Jose Arellano
Jose Arellano Day ago
HR violation 🤣🤣💀💀
TheOnlyRealTapir Day ago
HR violation :DDDD
Samuel Varga
Samuel Varga Day ago
Samuel Varga
Samuel Varga Day ago
Samuel Varga
Samuel Varga Day ago
Rukyura Myky
Rukyura Myky Day ago
Why did i click while i was eating, i follow him since the start, i should have known better.
Mr. W
Mr. W Day ago
It will blow something, but it's not my mind.
kl Chicago
kl Chicago Day 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 Chicago
kl Chicago Day ago
5:27 on the video link
kl Chicago
kl Chicago Day ago
davidbwa Day ago
I love your videos. I learn things and they make me laugh.
Butacup Pucatub
Butacup Pucatub Day ago
I need evolution to wink at the rest of 2020 and all of 2021 please 🧡
NouraJ Day ago
😂😂😂 oh Zefrank, both hilarious and education, I nearly peed myself laughing
EternalBear Animates
EternalBear Animates Day ago
Can you make a true facts video about kiwis? The bird not the fruit XD
Iverson Paul Alay
Iverson Paul Alay 2 days ago
Codeman785 2 days ago
During this little snake rave
Mo Na
Mo Na 2 days ago
Could you da a video about the weirdest species of all... the HUMAN?
harrison sim
harrison sim 2 days ago
How can such a simple animal be so complicated
Johnny Woods
Johnny Woods 2 days ago
Brain witches lols, that's a far more accurate job title for psychiatrists.
Owain Thomas
Owain Thomas 2 days ago
I can't believe this is the same guy who did teddy has an operation
happy man
happy man 2 days ago
the way he describes things is the most realistic i have ever seen
alex balfanz
alex balfanz 2 days ago
This is how a healthy bon bon looks like
fds fds
fds fds 2 days ago
So that's what my tongue and lower lip look like slowed down when I make fart noises...
Massage Dot Melbourne
Massage Dot Melbourne 2 days ago
This one is absolute wall to wall 24-carat GOLD. A masterpiece. Just wonderful. Love your work, Ze.
d_piyush 2 days ago
No animals were harmed during the filming of this video but they died because of laughter 😂😂
futsk01 2 days ago
Ok that at the end was just excessive.
Chris MacLean
Chris MacLean 2 days ago
These documentaries are so fukking awsome!
Travis B
Travis B 2 days ago
"It's called an HR violation." That one got me good.
Kevin Perry
Kevin Perry 2 days ago
I hate this, and I love this
deanthebean gaming
deanthebean gaming 2 days ago
I’ve watched this about a dozen times, it’s just so great
Nothsa Rekcap
Nothsa Rekcap 2 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.
Devilofether 3 days ago
6:17 sorry, still here, and now I have subscribed
Higor Araújo
Higor Araújo 3 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!
Long Hoang
Long Hoang 3 days ago
the outro is epic
Andrew Pearson
Andrew Pearson 3 days ago
OK like if you stuck out your tongue and tired to flick it up and down when he said that hahaha
Meru Me
Meru Me 3 days ago
hey remember ur teddy bear operation vid, haha. i watched that when i was like 6 👋 anyway hello again sir
Timi Haze
Timi Haze 3 days ago
The human tongue was the most disturbing
Kerry Godbout
Kerry Godbout 3 days ago
I had to pause midway through because I laughed so hard I spit my noodles onto my computer.
rasheed gregory
rasheed gregory 3 days ago
Dude I love your videos. I formative and extremely hiladious
Angela Bartlett
Angela Bartlett 3 days ago
"...HR violation." You are a funny man. xD
Diadorim 3 days ago
I love this man and his content with every fiber of my being
Mönkey 3 days ago
One of the best videos that came out on my birthday
Michal Šeps
Michal Šeps 3 days ago
yashua 3 days ago
From now on I'm calling psychiatrists "brain witches"
Sergio Di Martino
Sergio Di Martino 3 days ago
Butt molecules in the air
Sam E
Sam E 3 days ago
"Can't fool me, Brain Witch!" 🤣
DoomFinger511 3 days ago
How many of you actually tried flicking your tongue in the air?
nonya business
nonya business 3 days ago
I can never go back to normal docs. I have been spoiled by zefrank and the art of the info doc comedey.
Rusty Shakelford
Rusty Shakelford 3 days ago
Can't fool me, brain witch!
DiscoChixify 3 days ago
Rhett Shumway
Rhett Shumway 3 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
Carbohighstakes 3 days ago
bocoy noiu
bocoy noiu 4 days ago
That ending shot was disturbing in many ways...
Hookie Doo
Hookie Doo 4 days ago
This tongue will blow up your bicycle tires.
White Fire Productions
White Fire Productions 4 days ago
"Deep throating a squirrel's butt" Aaaallright, that's enough of that for today.
Lady Tempest
Lady Tempest 4 days ago
I've own snakes, monitors and other lizards... Men should take notes!!
Lady Tempest
Lady Tempest 3 days ago
@bocoy noiu great way to get a raise. Pun intended!!
bocoy noiu
bocoy noiu 4 days ago
When human do this it's called an HR violation 😂😂😂😂
naik naik
naik naik 4 days ago
hehe butt molecules
Jack Davenport
Jack Davenport 4 days ago
He’s back
Jarred Uys
Jarred Uys 4 days ago
All shag carpets are shag carpets of doom.
adrian427 4 days ago
the last 10 seconds.......scarred forever
Deadpool 4 days ago
Pls do a colab with David Attenborough.
sally caster
sally caster 4 days ago
Why is no one talking about the end-
Sarafina Delirium
Sarafina Delirium 4 days ago
But why do the snake do? Dr. Schwenk know why!
Adelphos89 4 days ago
My cat enjoyed your lizard/snake tongue video too XD
Bark Bark
Bark Bark 4 days ago
XD awesome
Kelsi Van Damme
Kelsi Van Damme 4 days ago
One of my favorite videos you guys have ever done! The science and jokes in this one are so good 😂
T J 4 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.
Karan Arya
Karan Arya 4 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.
Alaster Cute
Alaster Cute 4 days ago
Can you make a video about the blobfish
Blizzardfire 79
Blizzardfire 79 4 days ago
Stop being funny and smart at the same time, that’s not how it’s meant to work.
Zach Zhang
Zach Zhang 4 days ago
When human do this it's called an HR violation 😂😂😂😂
Shasvin Puvanesvaran
Shasvin Puvanesvaran 4 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.
Banana Junta
Banana Junta 4 days ago
Never get into an elevator with a bunch of snakes. If you fart they will all know it was you. Noted.
Banana Junta
Banana Junta 4 days ago
Smarty nipple lol
Moumanti Podder
Moumanti Podder 4 days ago
"I'll give an arm and a leg to be the best at it"... and they literally did just that :-P :-D
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