True Facts: Cats' Killer Senses
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- Published on Jun 14, 2020
- True Facts Poster! ze-true-store.myshopify.com/
CREDITS:
Thank you to Dr. Alexis Noel at www.noel.gatech.edu for allowing me to show her work. Click on the link to see other remarkable work that Dr. Noel has done! Her work on the cat tongue led to work on a better hairbrush!
www.researchgate.net/publicat...
Sweet receptors: www.ncbi.nlm.nih.gov/pmc/arti...
Pupil shapes: pubmed.ncbi.nlm.nih.gov/26601...
MUSIC:
soundcloud.com/querflote
Footage used under license from:
Pond5.com
Videoblocks.com
Envato Elements 
Pets & Animals
Thanks for giving Et. al some recognition. He is so underrated in the media, despite his presence in so many influential papers. Same thing as Feat. in music industry.
I’ve seen a whole stack of “pushrooms” too. Not entirely sure, but it’s literally labelled on the door so I know that’s what it is.
@cryw01f oh boo. Do you feel smarter than others now? Hope that feels great.
@Brandon James true. But I'm still telling everyone that Feat. is my favorite rapper.
@Hayley Robertson same
“Cats can’t really focus on things closer then 11 inches, which is a bit of a problem when you use your face to kill things”
One of the best lines
That and 'The eye of Sauron'.
I burst out laughing, and I dont laugh easy 😂
Okay, market idea…
Reading glasses for cats.
My vet says it’s more like 6 inches for “ domestic” felines like my Floozie.
Sounds like something rogan would say.
"Cats can't really focus on things closer than eleven inches" This statement has literally answered so many questions for me
Same
“...young people are want with grrrrrapes.” Omg I’ve lost one of my four nipples laughing so hard.
@Anti - Ethnic Cleansing It can be both :) The nice middle ground in our modern english is "as they like to do" with "like" being that nice middle ground between "something that is preferred" and "commonly done"
If you have a preference for something, you are also wont (haha) to commonly pursue that thing :)
@LeftHandDon'tKnow
I thought it was more like a preference or desire than “commonly.”
@꧁WupperElfe꧂ response to a super old comment here we gooo: it's "as young people are wont to do", wont is not the same as want, though they are pronounced the same. Wont means -> a person or person's particular habit, or a customary behavior. So it is ye olde english way of saying "as some young people commonly do with grapes"
That doesn't make any sense...how can you "be want" with something?!
LOL, petition for Jerry to be introduced as "Jerry my two-nippled friend" whenever Zefrank refers to him in a video
@Tyler " dinit you hear the last sentence"
Not when you're *LAUGHING* that dammed hard!
@Elvenkind bro he has four dinit you hear the last sentence
Since you mentioned me, yes I think this is a good idea.
@Elvenkind
Well Jerry himself said that he doesn't have two nipple. It is unclear whether he have less or more ( I suspect more considering he mentioned that some people have 3 nipples).
When he said cats can't digest plants and can only digest meats and fats etc. I felt super bad for all the "vegan cats" out there. Damn.
@AtarahDerek wow! This helps me understand so much better the vegan-meat issue. Thanks!
@AtarahDerek
Nah, I never did such research. I was only 16 years old when I became a vegetarian, and my entire focus was school and boys 😄 (and I still have never done such research 30 years later lol).
I don’t remember craving chocolate either when I gave up meat. I know that I craved sugar though when I quit smoking years ago, to the point that I gave myself cavities. I don’t know why I craved sugar so much then though. Maybe it was giving me some sort of dopamine rush that I was formally getting in cigarettes?
I’ve never liked seafood from day one, so I’ve never had any such habit with that. I’ve never been the type that eats a lot of salads either. I love vegetables, but when I eat a salad, it tends to take me a lot of time because I like to put a lot of stuff in it, so I end up not making them very often.
Being a vegetarian is super easy (it is veganism that requires doing research to make sure you are getting enough nutrients)…
As long as you aren’t eating garbage, you won’t have any problems getting all of your vitamins and minerals as a vegetarian.
When my body has some sort of craving for iron, that is when I usually find myself making eggs. That will come in spurts where sometimes I eat plenty of eggs, and other times I will go a long time without eating any.
Like I said earlier, I stopped craving actual meat six months after I cut it out of my diet, although I will have cravings for a few of different meat substitutes I like sometimes (it’s only three that I like… MorningStar Farms fake sausage patties/links, their fake bacon, and Trader Joe’s fake ground beef, which doesn’t really taste anything like real ground beef at all).
@Anti - Ethnic Cleansing A craving for meat is typically a craving for red meat in particular--meaning what you were actually craving (more likely than not) was iron. You may have also had a lot of chocolate cravings at the time. If you put a lot of research into a vegetarian lifestyle before switching, you learned to include lots of dark colored and/or cruciferous vegetables, which are high in iron. If you did that, then it was consciously choosing iron rich foods that cured your craving for meat. People who are addicted to red meat, but want or need to go vegetarian (e.g. people with alpha-gal syndrome from a tick bite), may struggle much more to make the transition because iron rich veggies also tend to be less popular, meaning people don't want to eat them, and thus they continue to crave the nutrient they lack in the food they know provides it.
And if you're a seafood addict, then you may be deficient in iodine. This means you're at risk of thyroid illness and need to actively supplement your iodine.
@Anti - Ethnic Cleansing It's funny you name it "gut feeling". Reminds me of that remark I read somewhere that your guttural bacteria may actually influence what you eat based on _their_ needs. This was related to a story about bad food (lots of sugar, fried stuff) and how if those bacteria crave that, they'll somehow make you crave it as well. So if you starve them of what they need, you'll lose those cravings too.
As for nutritional needs, these vary from person to person. I feel much better being on a high meat diet. The bits I don't like I cut out and feed to my rats. They'll not eat it if they don't like it either.
@FreeHomeBrew
Well it was explained in this video that cats do have different sense of taste, as in much less taste than humans. Just sayin’.
Side note: I used to crave meat because I was raised on it. Then I became a vegetarian at age 16 and stopped craving it after around 6 months post quitting it. The thought of eating it actually began disgusting me (and some meat even disgusted me before I quit eating it - I would be picky by cutting out veins and tendons and got grossed out by a Carl’s Jr hamburger as my last final straw for when I gave it up). I’ve never had any nutritional deficiencies in the 30 years since then, so idk if your gut feeling is a universal reality.
In breaking news, Sir David laughed so hard at zefrank that he fell out of his chair & fractured his hip. As he was being taken away by paramedics he was heard to say “I wish I could narrate documentaries like that”
really?
“Stank mouth”... so relieved to have the technical term for my cat’s expression after sticking his head in my gym shoes.
We always called it "yuck face".
Did a cat piss in your gym shoes?
“Try it when your roommate is in the bath”
“For science”
😂😂😂
6:33 i thought cats always landed on their feet
- Mark!! What the hell?!
- Calm down, Jim. I’m sciencing.
"It's like the internet, except communicated by pissing all over stuff. It's basically the internet."
This is the kind of scientific detail that keeps me coming back.
Technically, it's called P-mail!
I had to replay it to make sure I heard it right…perfection!
I just howled the first time I saw that
"Okay, it's a bit of a fart in a hurricane if you're trying to stop a charging giraffe."
It's the selection of the most accurate scientific methods and measurement tools that got me hooked so long ago.
You know if zefrank taught all my classes I might have actually learned stuff instead of getting bored and writing mental fanfiction the whole time
@jonel filipek Probably sci-fi or fantasy haha
What genre of fanfic did you mentally writing? Just curious.
"after their cat has a quick chat with it's eye of Sauron". Killed me
"cat got your tongue?" "you'll find its just the opposite, Mr Bond".
Genius line
literally LOL
Someone NEEDS to find that scientist and show her that part!!!! I need to know what her reaction would be!!!!!
*Biyurds*
I'm never ready when he says it like that, kills me every time lmao
@Astrobrant2 Yes lol
And "beh-behs".
The domestic cat: a being only 12 inches tall, yet somehow, magically, its butthole is always at our eye level. Fascinating.
@the yolorosa true, and that's why cats keep showing their behind if your body language shows you don't like what you see. Give them a compliment, and they will relax about it and stop doing it.
@Katie Kane You’re right about the grain. I feed Floozie grain free, high quality kibble. That makes her poos hard, so she gets 1/3 can of wet food every day and that helps with the hard poos and she thinks it’s a treat. Vet said to add more water to it, which really helps too. Floozie’s so furry can’t see the pink eye, lol. Princess Fluffy Butt is her nickname.
@the yolorosa many mammals have to help their young go to the bathroom
@Katie Kane In reality, it's a remnant from kittenhood. Mama cats have to stimulate their babies to go to the bathroom by licking them and just like when they knead you, it's a sign your cat thinks you're their mama. So congrats: you are cat mom!
Simple: you're either low or the cat is high! Wait.
"As one does.... in Science." Always makes me chuckle. I might start using this line in life.
Things this video made me realize: Tigra has vertical pupils for no reason other than that they look Cool.
“Have a chat with the eye of Sauron” That is a ridiculously hysterical image 😂
So you’re telling me that cats need reading glasses. Adorable
"Cats have very good night vision... When the lights come up at the club, they're not as surprised by who they've been dancing with."
😆 Who can relate?
And since they don’t drink, they never have Beer Googles on!
@4:29 and @5:39, the key to understanding why the domestic cat's eyes are vertically thin and then go large round like that is "Depth of Field" in relation to "Aperture/Pupil Size". A wider pupil size in a certain direction yields a tighter Depth of Field (DoF). So, when the pupil is thin horizontally, then horizontal edge features (like vertical blades of grass or vertical lines) over a long range will be relatively in focus (let's say objects 2.0m out to 20m for example). When the pupil widens, then the DoF shrinks and only objects within a certain range will be in focus (like 8.0m to 12.0m). So, the cat's eye can use this along with varying focus with its crystalline to gather more info to pinpoint distance.
I'm surprised you didn't mention the pheromone glands between the toes on the cat when it started licking there.
Also, that lion vs giraffe attack was incredible, impressive! Poor cat got launched. Serves it right, what was it thinking trying to attack a giraffe?
“This is a bit of an awkward blind spot to have if you use your face to kill things” 😂😂😂
ZeFrank is secretly all our favorite uncle who sneaks us the good stuff when the other adults aren't looking.
*Phrasing*
Indeed
@Bluecho4 and candy. BEFORE dinner.
In this case, "Good Stuff" is akin to those animal magazines/books that every child voraciously consumes.
The good life advice?
This is genuinely fascinating as a biologist. I wasn’t able to take animal physiology. But damn.
Evolution has a remedy for just about everything.
I want to share these with someone, but I don’t know anyone with exactly my sense of humor who could really understand the awesomeness of these videos. Brilliant 🌟🌟🌟🌟🌟
"A fart in a hurricane when your trying to stop a giraffe" . 🤣 🤣 🤣
BBC Head of Wildlife Dept: "what the hell are we gonna do when David Attenborough dies?"
3 million TheXvid Subscribers: "well...... ....we know a guy"
:)))
Except Zefrank knows how to pronounce the letter R, and not add an R where there isn't one. Unlike David A.
...can't have him
@꧁.꧂ there’s only 2 immortal people. Queen Elizabeth II and Sir David Attenborough. By the way, David, the queen is single now, shoot your shot.
Zefrank's narration is just so addicting to listen to, I'd listen to this man narrate the extinction of humanity if I could.
You can, if you happen to be the last two of us.
'' As you can see, this giant f**king rock is hurling towards ee-arth. In conclusion, we're all f**ked. Imagine throwing a tennis ball at a ball of jelly with ice in the middle. That is what this rock will do. :) ''
Damn, 3k likes all cuz your just some guy without a mustache
The bebes all died
Ye
“Oh really? Harry Styles has four?” All my years of being the one direction fandom have lead up to that moment
Make more of these! They're hilarious! Makes my day to watch them.
This is such a good episode, one of the best. Super in depth and interesting. More like this please.
“You think it would be meow”. that little gem almost got by me . Keep em coming zefrank, keep em comin
"Et al, who's like the best scientist, he's on all the papers" has to be the best thing ive heard this week. I needed this shit.
@illest
Refer to Nezumi Ws' comment (just above my comment) for further explanation.
@illest Read the second comment above you, it's from me so you can't miss it. Above that is also a good explanation.
i don’t get this joke mind explaining ?
RoZaSims ohhhhh thanks for explaining that >_> I’m stoopid ;-;
@Chronic Gaming it's latin and means something like "and others". It is used in scientific papers for authors
For example: John, Susan et al.
Edit: It's an abbreviation - so the period after it is always there!
Edit 2: I can't write others
I had a typical cat that had polydactyl kittens. One, a gorgeous pointed longhair mix had seven toes up front and five in back, aside from dew claw. His paws were so large (he was a big boi) that they just looked like cat-sized punching gloves. His seal point coloring didn't help at all. Miss that boi....
Wow, that bit about the different shaped/oriented pupils was totally new and very cool!
Phreakin Hilarious!
My sister had a pure white cat. It would jump out from behind the furniture when you least expected it. She named it Bonsai. My Dad called it "Spot", because when it was walking away from you, all you could see was that "spot".
That was a very cool Cat documentary, it's data is newer that what I learned along time ago and took for granted! I must say, your humor is so good, your videos are extremely well done. Thank You so much for really making me laugh, Thank You
I am honestly shocked that cats having barbed penises wasn't even brought up once.
@Zenigundam Tigra was neutered. The Vet didn't want to understandably go near Lion-o.
I mean that was all I was thinking about.
My girlfriend is a DVM(veterinarian). She told me that cats have barbed penises and I couldn’t believe her at first. But...she is a Vet, so I just went with it. Glad mine doesn’t have any bards. That would be inconvenient to say the least. Plus, what would she say, when I tell her “I’m stuck”. Like she’d believe me anyway.... 🤔😉
Yer
You've lead me down a rabbit hole that I cannot get out of. I now know that we used to have barbs too and now I cant stop thinking about what modern life would look like...
I honestly don't know if I hate you or love you right now, but I will say thank you for rekindling the spark that made me interested in biology.
Omg I just love your narration, it is the greatest. This is how it should always be. I hope you never quit making videos. Edit: Also thank you so much for these videos. They really are the best. I lol so much during your videos. This is what we all need. Thank you. Keep up the awesome job.
I love that ZeFrank is making videos again. For years I just kept showing my friends the old videos haha
Thanks again. You keep on with the crazy naturalist thing and it's just great. May the spirits of Marlon Perkins and Jaques Cousteau always be with the people at ZeFrank.
“A quick chat with its eye of Sauron” that had me laughing for a while
Zefrank's voice is the only reason I'll sit through a sponsor reading.
I also went through it for the narration, but I gotta say I was disappointed he didn't make it funnier; felt like he could've done more with the given material. On the other hand, I'm sure sponsors get shitty if you take too many liberties.
agree!
Same,same
That is a damn good reason 👍
Seriously
"Et Al. He's the best scientist, he's on like... all the papers." LOL
I've just found this, and I like nature/animals. But the twist of being insultive and weird puns. Is just perfect and very entertaining, definitely got my subscription.
The vibrissae have a direct pathway to the lobe that interprets where in space the tactile sense is being found, giving the animal a sense of space & time. It also helps the animal to tell if it can squeeze through small spaces.
I love your edits Mr editor keep up the amazing work and making us happy during these upsetting times
"Et al is like the best scientist, he's on all the papers." -ZeFrank
That's hilarious
I like how you actually learn something while watching this
First time coming across this guy’s videos...and I’m so glad I did. He’s hilarious!
The metaphor at 6:00 makes me feel like your writers are trained educators _or_ you quoted a brilliantly articulate resource.
That was such an effective way to make an complex concept concrete!
~~~~
I'm sending this to my brothers immediately.
I learned a lot about pupils today, that is how eyes do
someone who learns is called a pupil. . .
This channel originally started with a VISION.
EYE SEE what you did there.
This changed my PERSPECTIVE on the matter. 👀
Yes sirrr
A highly informative as well as amusing presentation. Thanks... and more please.
i love how you have one sided conversations with your editor. I find it endearing and funny.
I refer to the piss-scenting thing as "Pee-Mail." When your dog is stopping to sniff something from time to time, it is just checking it's pee-mail. All pee-mail is automatically CC'd to everyone. No PM's in the animal world. Well yes, PMS maybe but that's something else.
Ze... You once created one of the art works I will remember the most when I get old: The music created from heartbreaks. These commercials in-video are frankly about as far beneath you as a... I was going to say a Ze-Frankenesque joke about how far beneath you it is, but I'm bummed out and I frankly can't think of any. I love your flims. You're the gift that keeps giving. You're the opposite to commercialism. Thank you for all the joy you have brought to my life. And you have brought so much. You just sometimes save the day for me. From the bottom of my heart, thank you
"You know when you try to smell your own breath without using your hand, and you think no one notices...? This is what you look like." 🤣🤣🤣🤣
The work Et Al has done for humanity is honestly amazing.
I love the callback to evolution adding or subtracting nipples on cats.
You know, I hate ads...but I love them as long as you are voicing them over. I never skip them because I can't wait to see what greatness is yet to come.
“Et. al, he’s like the best scientist, he’s on all the papers.”
I just got home from work and I’ll park at my park
So Frikkan pFunny!
"... it's like the internet except communicated by pissing all over stuff... it's basically the internet."
@Al Sorensen then you should have appreciated it when Frank ACTUALLY WROTE IT.
Talking about you specifically, George Blue.
"A cat's tongue is a little 'ruff'... you'd think it'd be meow, tho"
Got me 💀
I love how the guy I feel serious while he's explaining all these scientific facts yet he still makes of use funny jokes like the Jabba the Hutt one
3:56
ZeFrank: Whatever the hell this is - referring to its pupil shape.
Cuttlefish that can adapt its pupil shape to deal with different light intensities.
Cuttlefish: Am I a joke to you?
Zefrank has to be the best science teacher ever! Funny! Yet also informative!
Me, looking at my tiny cat sleeping with her little feets sticking up in the air on a comically large pile of pillows and blankets taking up the majority of my couch: Ah yes, nature's greatest predator.
One time a single house cat drove an entire species of bird to extinction. They were Native only to an island with a lighthouse and the keeper got a cat. Soon after all the birds were gone. Genocide Kitty don’t give a shitty.
I own my cat, she brings me silverware, retrieves balls and birds, sits, stays, rolls over, comes when I call her, and goes into her kennel when told. Yall just don't know how train your cats. They take advantage of weak people. She's a Labrador breed.
@CSN My cats were killing machines out the gate, tho not from breeding, they were pretty standard red mackerel tabbies (a little longer/taller than average, but not to Maine coon size) and they developed their hunting skills cuz they were left on a woman's porch and she decided since she already had dogs and small children she couldn't let them inside. She put out water dishes and cat food and put out the word that she had cats needing to be adopted, but since they had to stay outside they got very used to supplementing their diets with fresh kill. Which they 1000% continued once we took them home.
@Amethyst Orchard felt that in my soul!
Really old saying: dogs have owners, cats have staff.. completely agree!! Lololol
Thank you frank. I love the way you talk about the description of the Tapetum lucidum glow in the eyes. I couldn’t have said it better myself.
"stank mouth" made me laugh for over a minute straight I was completely losing it I couldn't even hear the commentary over my own laugh
In Key West they have cats with 6 toes running around. They are a genetic mutation and the cats are locally known as Hemingway cats.
"--and then whatever the hell this is. Looks like the mouth of a sad ghost."
I'm crying EKDKDJ
There’s one thing that never changes about Zefrank:
*He hates clams*
Bivalves are the traitors of seafood world because they taste gross and seafood is delicious. Even gators and frogs are yummy. But not clams and their oyster-y friends.
Then again, who doesn't?
Not as much as baby frogs leaping out of their mother's skin!
@Bigfoot been there done that. Got the hospital bill for it.
you CAN actually drink like a cat, if you really want to. pretty fun, gotta say. you can do it with chips, too.
I have read that lions' vibrisses receptors are sensitive enough to locate the space between the trachea and the jugular vein in order to bite without spreading too much blood and to bring the prey to a quicker death, saving energy.
hilarious, yet still informative
love it
ZeFrank is maybe the best at turning hard science into entertainment, love it
Et Al is the best scientist, he's on all the papers
@James The-Doctor YOU lighten up mr manny man!
ELoveHo yes, et “AL” would most likely be a guy if it weren’t actually the Latin word for “others.” I don’t know any women who go by the name “AL.” Either way, it’s a joke, a play on words, lighten up and enjoy the funny comments.
Thanks to everyone for explaining. I’ve never come across that before
Y u assume it's a he? 😂😂
That joke killed me
Sad to say I found this channel this year 😬
Can’t get better than learning with a good laugh 🤙🏽
"They used their sciences ..." cracked me up
I actually learn so much from this guy. Where was he when I suffered though high school?
Zefrank1 I love your work so much it makes me laugh every time, and so educational too! Please please can you make a video about horses?
Damn. I never even knew that whole part about the shapes of animals pupils and why they're shaped differently. That was cool thanks Frank
@BaufenBeast That shall remain a mystery like the mystery of why zefrank hates clams.
He didn't say what the cuttlefish pupil is good for though.
So glad I've found this channel. Funny and informative.
So glad I've found this channel. Funny and informative.
Extra digits is actually a really common mutation among domestic cats. It's called polydactylism
Fun fact about eye rotation. Our eyes do this too.
Its just hard to notice because our pupils are round. But if you focus on the pattern of the iris, or a vein on the sclera, and have someone tilt your head, you can see the eye remain at level.
New favourite Zefrank quote: "This can be awkward when you use your face to kill things."
"When your basic body plan is designed to do the floaty floaty, life can be a bit of a bitch" (or something like that) that was from the mudskipper video and it was the line thatt got me hooked to this channel bc it is great.
"Ok its a fart in a hurricane when your trying to take down a charging giraffe"
totally laughed out loud when I heard that... hahah... NSFW is right!!!
Also explains why my dumbass cats bite my fingers when I give them treats
@roy seibel right it kills prey with its face
I love your narrating skills. Keep it up!
My old cat used to love Hawaiin bread and cinnamon pancakes, I always said she had a sweet tooth and I'm still convinced she did.
I love your channel, your brilliantly hilarious!
It is absolutely astonishing how much I learn from these 10+ minute videos
This man is like David Attenborough if he was a stoner.
@Red Hoody Hoodlum says wannabe Kurt Cobain
Are you telling me he`s not stoned when recording his videos?
roflmao.... David Stonerborough.... LOVE IT!!! good one @Spooky Senpai
This made me laugh to tears. True!
I definitely agree 🤣
Thank you so much. I went to a big cat sanctuary and ask about the pupil thing and they told me they weren't different wghich I knew wasn't true.
I managed to season broccoli so well, my cat was stealing and eating multiple pieces.
Perfect video to watch before bed. Classical music, cats and calm voice
“.-Alright, its a bit of a fart in a hurricane if you’re trying to stop a charging giraffe”
Poetry at its finest
"Ok, so it's a bit of a fart in a hurricane if you're trying to stop a charging giraffe."
Honestly one of the best sentences Zefrank could give us.
3:00 Once felt something similar after having a really spicy burger. I didn't vomit or burp it back up, it went straight through. Next day was when I learned that the anus and rectum has taste-gland-like cells similar to those in the mouth.
i cant believe something has managed to catch and hold my attention for 12 minutes. this man is quite remarkable
You get me to laugh so hard it hurts!!!! Keep up the great work.