Did T.rex really have bad eyesight?

Did T.rex/Tyrannosaurus rex really have bad eyesight?
Don’t Move a Muscle!
Footage used:
-Jurassic Park (Copyright Universal Studios, no copyright infringement intended)
-Jurassic Park 3 (Copyright Universal Studios, no copyright infringement intended)
-Amazing World of Gumball (Copyright Cartoon Network, no copyright infringement intended)
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-A Tyrannosaurus Rex hunts an Ornithomimus. MARK GARLICK/CORBIS
-Furious Dinosaurs by Traheripteryx (traheripteryx.deviantart.com)
-Multiple Theropod Models by © 2011 Kent A. Stevens, University of Oregon
-Tyrannosaurus rex by John Conway (johnconway.co/tyrannosaurus-rex)
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Sources:
ix.cs.uoregon.edu/~kent/paleon...
www.iflscience.com/plants-and-...
www.treeosaur.com/html/InDepth...
en.wikipedia.org/wiki/Tyranno...
ix.cs.uoregon.edu/~kent/paleon...

[@Ghidorah_Stan64]

This is a rare occasion where the real thing is more dangerous than its Hollywood counterpart.

[@iluvyurbles]

A real T Rex would have pwned the hollywood one

[@mexicanmuslim]

A Real TRex wouldnt roar for no reason. It would stealthy pwn the hollywood trex. And i think feathered is cooler.

[@markcobuzzi826]

Also, you might want to check out the video called “What Did The T-Rex REALLY Sound Like?” by Dangerville. After seeing that video, now part of me really wants to see a movie involving a near 100% accurate T-Rex (though the Jurassic Park T-Rex still works for me, seeing how it is a hybrid of T-Rex and different modern animals, made to pose as a theme park attraction). Imagine a T-Rex being portrayed with JP-quality animatronics and CGI, but with a feathered appearance similar to the Saurian game in some ways, demonstrating great eyesight/hearing/smell, generating a thundering close-mouthed vocalization mixed with infrasound as in that video, and having all other sounds it generates (like the equivalent of hisses, open-mouth calls, songs, squawks, crows, growls, etc.) being based exclusively on birds and crocodilians to create more plausibly accurate sound-effects.

[@oopsiepoopsie2898]

EVAN HERRS it would a very deep sound similar to a crocodile, but if it was close enough you could slightly feel it

[@cloudy1606]

Mad Dog they did that so it’s easier for the main characters to escape with is really lazy

[@daliborjovanovic510]

It`s funny how Jurassic Park made T.rex less badass than in real life by giving it basically no sense of sight or smell, which would be a death sentence for any predator.

[@josephwallace202]

Less bite force too, based on the fact that the rex didn't bite the dude on the toilet straight in half in the first movie.

[@karthiks3414]

thats because JP didnt have actual dinosaurs.... its only part dinosaur at that time... n remaining made out of frog... so we should be looking at a frog perspective than an eagle or crocodile

[@slitbodmod02]

If they were going to fill in the dna strand of the dinosaur why did they use frog dna.

[@markcobuzzi826]

+Gynnester gaming here To be fair, though, it is better explained in the book, where amphibians were just one of many modern animals used to systematically fill in the blanks and create a GMO that visitors would want the theme park’s Dinosaurs to look like. I recall them also using the DNA of avians, crocodiles, lizards, etc. as well. The book also explicitly stated that the T-Rex’s poor eyesight was a byproduct of Ingen’s genetic tampering, rather than the Dinosaur naturally having bad eyesight. This is one small area that the first movie adaptation botched, in my opinion, until a retcon in Jurassic World helped rectify it.

[@wschippr1]

Mark Cobuzzi Some animals in real life only recognize things that move as prey. I doubt Rex would be one of those, but it does exist and tends to be more of an insectivore thing.

[@pacman5698]

T. Rex was an ambushing predator, with great vision, and a bacteria-filled bite, and Spinosaurus was a semi-aquatic serpent-type monster that could detect the motion of animals in water? If anything, the real types of dinosaurs we know of today sound cooler than the ones in _Jurassic Park_!

[@WatchMyMadness]

+Mr. Fedora - Agreed

[@ap9413]

Meh, not a bacteria filled bite, that was based on Komodo dragons, which are now known to possess venom. But otherwise, I totally agree :)

[@Talla50k]

actually studies show that only young rexes had that komodo dragon like bite and it faded away as it grew

[@WatchMyMadness]

Nasutoceratops 1983 Oh yeah? you got any links to those studies?

[@jagk-du3yw]

+SnowBlind125 REKT

[@invisiblejaguar1]

I guess they had no choice but to depower the T rex in the movie. Otherwise the kids, Grant and Malcolm all would have been killed at the drop of a hat.

[@kurvos]

Leila Smith Only an incompetent writer/director/story teller adapts the lore after their stories. A competent one adapts their stories after the lore they've chosen. ... this is basically why I don't get people give Christopher Nolan so much praise for his Batman trilogy, since he shows all those signs of being an incompetent story teller based on how Batman lore is supposed to work. Buuuut I'm getting off the subject. XD

[@invisiblejaguar1]

kurvos Nothing wrong with going off the subject, I know I'm guilty of that a lot.

[@JurassicReptile]

kurvos So where does that put Jurassic Park

[@TheJummbl]

Leila Smith not to mention in later films, the t-rex's bite was greatly reduced. T-rex could have snapped Spino's neck in half a second after getting its mouth around it.

[@invisiblejaguar1]

jummbl I think the logic they apply to that scenario is that the T rex in that scene was still quite young, so it's bite wasn't as impressive as an adult's such as Rexy's.

[@The_PokeSaurus]

Human: Don't move! It cant see you if you don't move! STOMP!!!! T-rex: OOOPS! I didn't see you there! :)

[@jagk-du3yw]

You sir, deserve a cookie. You made me laugh.

[@The_PokeSaurus]

HeartlessCraft Mercilessforever Thank You! :)

[@jeffreygao3956]

Hahahahaha!

[@iluvyurbles]

XD That's great

[@patmoore15]

Human:don't move! It cant see you if you don't move! T-rex:Hmm i think its just a statue

[@TREYtheExplainer]

Please no Jurassic Park fan boy comments! This video is not about Jurassic Park, it is about the real T.rex.

[@joldsaway3489]

The real question, though, is how can a T-Rex's eyes be real if mirrors aren't real?

[@TREYtheExplainer]

***** Sure I'll talk about them

[@kbgrevolver4563]

TREY the Explainer If you took the time to read the book you'll have a better understanding about how Jurassic Park works (that is if you haven't already read the book 'cause if that's the case then you can stop reading my ignorant comment). I'm not saying this to demean you, I mean really check out the book, it's a good read.

[@TREYtheExplainer]

KBGrevolver This video is not about Jurassic Park, it is about the real T.rex.

[@kbgrevolver4563]

TREY the Explainer I'm not referring to the video, the video is fine. It's your feelings towards certain aspects of Jurassic Park. I'm commenting on you saying things like "contrived, b.s explanation" towards Jurassic Park.

[@aaronaltman8065]

Fantastic eyesight, a superb sense of smell, acute hearing, and literally the largest brain of any dinosaur, T-rex seems like it was the pinnacle of predatory dinosaur evolution.

[@yourmomasaurus]

Aaron Altman yeah

[@Ahturos]

T-rex worked hard for the titel.

[@vladprus4019]

But some stupid peaple would tell that this animal is not scary, becouse feathers...

[@Ahturos]

Ask them to stand infront of a kasuar and see if they dare call it silly. Closest I will get to a dinosaur looking bird.

[@hornitako7006]

I'd pee my pants if a cassowary was standing in front of me

[@TREYtheExplainer]

Thank you for watching!

[@PMW3]

TREY the Explainer you're welcome :D

[@smallpanzer]

TREY the Explainer Your dino docus are the best! keep it up

[@duckduck.]

Ahh a midnight youtube video that will help me sleep :D

[@ketertube]

TREY the Explainer I think Triceratops still had a good vision? I wish the next paleo profile is about Titanoceratops or other ceratopsians not carnivore creatures

[@MadMargaretGaming]

TREY the Explainer Does this amazing eyesight suggest that T. rex would have been an active predator.

[@packerfan1232]

you forgot one fact. if the t rex eyesight was based on movement it would have bumped into trees and tripped on rocks

[@veronica33s45]

Packer Fan i dont think eyesight based on movement means that its practically blind. It sees everything poorly but cant recognise the living unless they’re moving. (As for the movie t-rexes of course)

[@jaceh4942]

Many species of snakes cannot detect prey that is sitting still. They just use other senses to avoid obstacles. I'm sure these snakes are what inspired the T-rex vision for the movie.

[@windhelmguard5295]

that would not be the case, you have to consider that this is in perspective of the t-rex, when the t-rex is in motion, from the t-rexes frame of reference, the trees and rocks are in motion and can therefore be percieved, the t-rex would struggle to distinguish what it is on sight alone, but it would damn well know that something is there.

[@znajib9048]

And u also forgot one fact that’s not true

[@neroidius6915]

And it would be falling into rivers and over cliffs and it wouldn’t be able to eat it’s kill because the dead body would be still lol. An animal that big would go extinct without good eyesight

[@manofmanifesto3348]

4:33 I love how Allosaurus looks perfectly confused as to what's happening to him and where he is.

[@lompass379]

when gumball is more accurate tha hollywood

[@deannadeel7012]

U earned a new sub

[@josharntt]

T Rex from Jurassic Park was mixed with a lot of other animals DNA

[@justanormalinvestigator2640]

THA

[@amn2760]

@@josharntt What DNA they should use are bird DNAs

[@deadpool3598]

I am baffled at at how many people believe the BS hollywood inaccuracies of jurrasic park. They were entertaining movies, but that was all. Trex most likely being the apex predator of it's time, most likely had excellent vision. Not to mention excellent smelling. Even if a trex couldn't see you, it most likely would be able to sniff you out and find you. Alot of modern day predators have excellent sight and smell. Trex wouldn't be any different.

[@jagk-du3yw]

And a T-rex' nasal cavity was huge, according to the CT scans. Many animals use their smelling to find things. Dogs can recognize every animal (humans included) just by the smell. Why wouldn't a giant carnivore have a good sense of smell?

[@angeliesalvebernardez8587]

Hollywood can make you believe in their own lies, they only believe what they believe.

[@maximaldinotrap]

Yeah but dogs also typically have great eyesight too.

[@wschippr1]

maximaldinotrap Greats a pretty big exaggeration. Human eyesight is better than a dogs for example, about six times better in fact.

[@trentgaines7915]

Deadpool 35 : Don't forget that the T-Rex's vision is better than Eagles and Hawks.

[@shitpost9237]

Trex too op pls nerf

[@badjur3791]

lol

[@manchmalpfosten8133]

Pretty sure he got nerfed 60 Million years ago.

[@activebros2846]

Donkey bitch ass why do you have swears in your name

[@Seb90009]

because freedom of speech

[@meme_guy924]

Low Budget Animation how do you nerf an extinct animal

[@lorddinosaur9885]

Actually, if you read the book, all the dinosaurs in Jurassic Park are meant to have vision based on movement because all of them had amphibian DNA. T-Rex having poor vision is actually a mistake they made in the movie.

[@JH-dy8ts]

Can you sub to my KZbin please?

[@therosrex5488]

+Lord Dinosaur Not all of the dinosaurs had frog DNA, only 4-5 did

[@lorddinosaur9885]

Th Rei Didn't all of them have a little bit but the Raptors, Maiasauras and several others have a lot of it?

[@therosrex5488]

No, the only dinosaurs to incorperate Rana, or frog, DNA were Velociraptors, Maiasauras, Dryosaurs (or Othys, I forget which), and one or 2 more

[@lorddinosaur9885]

Th Rei Okay then but what is the Amphio-thingy that Alan Grant said the T-Rex had as well as the Apatosaurus?

[@mrironbot9533]

My question is: Would dinosaurs really be as hostile towards humans as they are in popular media.

[@RexOrbis]

If they wanted to eat them then yeah.

[@JamesEpicson]

Most small to medium carnivores would snack on a human if they were hungry. Large carnivores probably wouldn't, as a human wouldn't be worth the energy for such a big animal.

[@mrironbot9533]

Harpy eagles will attack human children and there is also the cassowary, which is the most hostile bird towards humans. And these Creatures are the descendants of dinosaurs so my question is answered.

[@babehunter1324]

They likely wouldn't been more agressive to humans than modern wild carnivores which hadn't been in contact with humans. They could see them as prey or as a threat but they would certainly not go out of their way to attack them. In a realistic coexistence scenario is quite likely that Dinosaurs would became more careful around humans. Even the biggest living animals are usually afraid of humans due to hunting.

[@jesusramirezromo2037]

Depends, probably they wpuldnt atack us for huntyng but more of fear seeing something unknown to them

[@TheStupendousWave]

Great video! Highly informative! Thanks for taking the time to make it:)

[@jiraiyamagistrado]

Hi Wave!

[@shunsuikyoraku5428]

Hey look it's stupendous

[@danger_floof]

I don't want more Star Wars !

[@yxngpr0ph3t70]

+Danger Floof First bis now here... Yaaaaaaaay

[@caroline7648]

I like your channel but why are you here?

[@AnalisaMelanoProfundamente]

that cacharodontosaurus needs to eat! i can see his skull already

[@jagk-du3yw]

wow... for the mighty "shark toothed lizard", he's kinda skinny there

[@thewiseone7343]

+Pnarhavi Headhunter Edge Lord but he is fast

[@jagk-du3yw]

man dpg And relatively strong...

[@asdfghjklzxcvbnm6874]

well, you know, umm carcharodontosaurus is an african

[@Em-nj4uu]

asdfghjkl zxcvbnm o h

[@costatron2810]

3:07 I was looking at the normal face of the Trex and then I looked away, looked back I screamed!!

[@pikkuadi]

CostaTron2 Shhh. T.rex can only hear you if you scream.

[@pharoahcaraboo9610]

Those front-facing textured models from the study make T.rex and Allosaurus look so... cute! They look like they're staring at me like a puppy. A puppy that could bite me in half.

[@griimlock8922]

imagine if the Tyrannosaurus Rex had big arms that would of been so unfair to the rest of the dinosaurs of the era

[@admiralcat3809]

What about Carcharodontosaurus and the Giganotosaurus? They have large arms

[@Pitbull00000]

+Captain Cat t rex would still beat them with his Tiny arms

[@jiraffe9600]

Eyesight

[@j117masterchief7]

griimlock it doesnt matter if its fair its called life nothing is fair

[@Tenereus]

Actually, Carcharodontosaurus and Giganotosaurus didn't have large arms. Sure, they had arms larger than that of a T-rex, but they really weren't too useful for taking down most of the prey they had.

[@McCbobbish]

Not to mention, even if they were almost blind, they would probably be able to smell you (especially with that shit dribbling down your pant leg).

[@maxley.]

3:04 OH MY GOD THATS SCARY!

[@EK-gt2xf]

IKR

[@ethxno2912]

3:04 THAT IS JUST CREEPY

[@potatoraider7320]

Who will Win? A hollywood T-rex Or One Historically Accuarate, silent and Feathery Boi

[@emanueleapostoli244]

Hahahahahah feathered boi hahahahahah No.

[@znajib9048]

Probably reality

[@emanueleapostoli244]

@Kenn Honson X Nope. Look at saurian.

[@emanueleapostoli244]

@Kenn Honson X No. Search up the new trex of the game saurian.

[@tf2terrifictrolltrain642]

@Kenn Honson X Not exactly known for sure, but most likely the T -rex had little to no feathers due to its size and scaling.

[@gluteusmaximus8881]

I knew that T. Rex had a good eyesight, but I didn't expect it to be that good. And could you please do an paleo profile on cameroceas? :D

[@raging_crocodile2081]

Please do a paleo profile on predator X. :)

[@falkkiwiben]

James Cootsona YES!!!

[@ogaitbaixinho9944]

James Cootsona yes! I love plio :)

[@widebaldo]

James Cootsona Yes, PLEASE DO!

[@chojiun5938]

have u guys ever heard of shastasaurus

[@WatchMyMadness]

+James Cootsona Wait.. what is predator x?

[@finchatforharambe905]

2:17 The 3 horsemen of the apocalypse

[@bobbills2953]

3:07 This is scarier than all the Jurassic Park movies ;-;

[@Stormywingz]

That rex on the thumbnail looks terrifying lol

[@danhouser2501]

Why not how feathers looked liked on a T. Rex?

[@TREYtheExplainer]

Dan Houser I will ;)

[@danhouser2501]

TREY the Explainer Thank you. Personally i don't think the T. Rex was covered in feathers like shown in this image th03.deviantart.net/fs70/PRE/i/2014/294/e/f/tyrannosaurus_rex___updated_version_by_moricemonkey93-d83n1sa.png i think these would be more accurate dinosaurian-age.weebly.com/uploads/2/3/6/6/23660276/5359304_orig.jpg, i.kinja-img.com/gawker-media/image/upload/jwsxppgxhwr2gpddtn9q.jpg, www.collecta.biz/collecta_files/products/88717-small.jpg

[@TREYtheExplainer]

Dan Houser Yeah, I'll talk about it in the video. Thanks for the images!

[@danhouser2501]

TREY the Explainer You're welcome have a good day, evening or night.

[@TheJummbl]

TREY the Explainer will you touch on what colors t-rex would have been? Wouldn't it be limited to what colors scales and proto-feathers allow?

[@myleswelnetz6700]

The Jurassic Park novel said that the T rex’s poor eyesight was a symptom of the frog DNA.

[@mysteryman4915]

I dont watch cartoons, but that gumball snip you showed had me in stitches.

[@THEW0LFB0Y]

Trex aka a true Badass

[@TREYtheExplainer]

THE W0LF B0Y You speak the truth!

[@shrimppimp4509]

Maybe

[@falkkiwiben]

TREY the Explainer but i saw a documentary ones that said that the T-Rrex was a scavenger, becouse of its legs and how the eyes whare bad becouse of its brain, you have probobly seen it.

[@THEW0LFB0Y]

It was a hunter

[@TrexAintaChicken]

Benjamin Macdonald Let me guess. Was the paleontologist in the documentary named Jack Horner?

[@ongka2000]

Even if T Rex eye sight is as bad as it was portrayed in Jurassic Park, it still could definitely smell Grant and kids at close up.

[@thirdplanet4471]

Akira Leelarapin True but the rain can affect scent

[@ongka2000]

Reverse Dipper Pines T Rex was one of the best smellers. In fact, his scent was as good as vulture, which could detect a corpse of an animal miles away. Therefore, there’s definitely no reason T Rex couldn’t smell Grant and kids.

[@thirdplanet4471]

Akira Leelarapin Unless if a stronger scent like a mountain of crap covers the scent of the dead corpse

[@windhelmguard5295]

@This Guys Toupee kids generally don't smell much at all even when they do get sweaty, adult men however never don't smell.

[@bigfootlil]

In the book, Grant discovers this bad eyesight in the sauropods too, putting it down to (if I remember correctly) the way geneticists had been making the animals. Obviously, they took it down the cinematic route focussing only on the rex, but has there been any studies on various sauropod eyes? I've not been through all your videos yet, but after watching about the one about Carnotaurus (and its arms), can you (if not already) discuss t-rex arms?

[@digunder14]

lol, that image at 3:09 pure gold, perfect for a dino based emoji or somthing

[@kierancowface]

It would make sense that T-Rex could see something inanimate because when some herbivores that T-Rex hunted where quite still when grazing and eating, meaning that T-Rex would have to see all objects, moving or not. T-Rex was a mistake to bring to life that we hope is never made. I think that Compsognathus and other similar sized carnivores should be THE MAXIMUM for carnivores if we can recreate them. I know people wanna see the big guns like ak-47 instead of a really weak handgun, but it's safer and basically it means nobody gets hurt. This is my opinion, don't judge.

[@shane2716]

kieran cow-face we can not bring dinos back to at all, thier dna is gone

[@TheJummbl]

william adkins not entirely, we're learning more and more about that stuff and I read that they found fossilized proteins (not sure how accurate this is). Though ultimately I think the closest we can come to bringing dinosaurs back is reverse bioengineering them.

[@thebrentwood4158]

william adkins DNA in the fossils, And blood.

[@luispereira2354]

william adkins Today, their dna is gone, but 60 million years ago it was in perfect shape. And since we WILL be able to travel in time in a few hundred years, will be able to get their dna in perfect condition

[@shane2716]

Luis Pereira Timetravel is a touchy subjest so say you go back in time to kill hitler well if you did then hitler died before you made the choce of killing. See a paradox that is why timetravel is a touchy subject. Also my comment is almost 2 years old

[@sebkim7970]

Does some of the things people consider flawed in the Jurassic Park Franchise make sense? 1. T.Rex's Eye Sight -In the movies, all of the T.Rex's eye sight are based on movement. Now, we know that T.Rexes have great eye sight and that most of the dinosaurs in Jurassic Park/World are part frog which have eye sight based on movement. Since they filled parts of the T.Rex's DNA with frog DNA, the T.Rex might have some characteristics of a frog such as the movement eye sight. (If you don't believe this theory, read the second book, the Lost World, where some one tries to trick the T.Rex by standing still but Malcolm states that he read the wrong report) 2. No Feathers on Dinosaurs/Poison for the Dilophosaurus -Jurassic Park/World was a theme park that wanted to attract a lot of people. However, if they suddenly broke everyone's imagination by putting feathers on dinosaurs, that would disappoint a lot of people. Dr. Wu probably saw that the dinosaurs had feathers and changed the DNA code to remove them. Poison for the Dilophosaurus is probably the same. They want the dinosaurs to be 'Bigger, Louder, Have More Teeth,' so they made the Dilophosaurus have poison spit. (They explained this in Jurassic World)

[@TREYtheExplainer]

DaeYoung Kim I really don't care what contrived, b.s explanation Jurassic Park makes up to cover up its inaccuracies. This video is not about Jurassic Park, it is about the real T.rex.

[@CainPeel]

TREY the Explainer I complained about the original Jurassic park movies so much so I was actually very happy they tried to give reason for their inaccuracies

[@vyalon7387]

TREY the Explainer then why did you make the video? Everyone knows the Trex has good sight.

[@vyalon7387]

Cain you could of read the books... or just paid attention to the movie

[@josharntt]

@@TREYtheExplainer Why were you so hostile about Jurassic Park? They tried explaining things, it's not their fault that people didn't read the book or pay attention.

[@theworthysoul]

Jurassic Park: noisy, scaly, poor eyesight, poor sense of smell Reality: probably feathery, amazing eyesight, good sense of smell

[@doomslayerprime9749]

love your channel man keep up the good work

[@kbgrevolver4563]

What do you think about the Pokemon Tyrantrum?

[@BlackDragonKrui]

KBGrevolver very slow and weak specialy again water :p

[@thedumbmusicchannel909]

Real T.rex is soooo!!! much cooler than Jurassic park t.rex! It had extremely good eyesight a huge muscular body with a 12800 pound bite force. Fuck that scaly crocodile from Jurassic Park. Real T. rex is sooo!!! Much cooler than Jurassic park, and the best dinosaur ever!!!

[@user-mp8wy8lp4y]

Well the jp Trex also had a fair amount of muscle on its body

[@grillodofus]

That scared me shitless! 0.0 I do have a model of "Sue"´s Skull right here in my desk, and ,boy!, having seen this video it´s suddenly much more scary!

[@dougthedonkey1805]

Loving the music disks playing in the background

[@Alexover9000]

It's seems t-rex like sue at 42ft 12.80m. Was an amazing killing machine. I still don't get why some people dislike this dinosaur so much. It's seem it has better abilities than the other predatory dinosaurs like ginotosaurus

[@TREYtheExplainer]

Alejandro Villaquiran For sure!

[@KhanMann66]

What people hate t rex?!

[@TREYtheExplainer]

StupendousRex 65 Heey, Sorry for being rude and calling you a fan boy, that was uncalled for I was very tired hope you are still a fan :(

[@TREYtheExplainer]

StupendousRex 65 thanks man, sorry

[@leetroy808]

First off, great video, very informative, I really enjoyed it. Just for clarification, the book and I (believe) the movie explicitly state that the characteristic of only being able to see movement is due to the insertion of certain frog genes, not because Trex as an animal naturally had this type of eye sight.

[@abdelsalamibrahim7455]

Troy Lee No, Alan Grant knows it from the beginning as if it is general scientific knowledge, stop the apologetics and recognize the movie's inaccuracies.

[@wetube6513]

@@abdelsalamibrahim7455 facts

[@JonaGold-od8rt]

Great video :) Maybe you can do a video on the biggest Dinosaur(s).

[@fighter5583]

Gumball: Don't move. Its vision is based on movement.... Tina: That only works in movies.

[@The_PokeSaurus]

T-rex'es eyes are sharper then it teeth!

[@JRex-yo6um]

Guy 1:Don't move its eyes are based movement. (o - o) Guy 2:(Whimpers) ):} Guy 3:That only works in movies you idiot. D:< Guy 1:Ah damn it ):| T-Rex:RRRRRROOOOOAAAARRRRR Guy 1 and 2:AAAAAAHHHHHHHH. D: )

[@MegalodonKillerYT]

Hey trey great video! Factual and super interesting like the rest! I was wondering as a suggestion whether you'd like to do a paleo-short on the dienosuchus (Terrible Crocodile)? It's up to you. Have a great day!

[@josesick2]

Great video, it would be nice if you could make a video about not that known curiosities about dinosaurs. Keep on the good work!

[@jessehutchings]

I love evidence and research based analysis about T.Rex's abilities. The coolest thing about the REAL T.Rex is that it was probably smarter, stronger and a much better hunter than it is depicted as in any movie (not just Jurassic Park). I wouldn't be surprised if the real T.Rex exceeded all our expectations

[@neilcollins4210]

In the movie's defense, technically in the book someone mentions that the vision issue was a common occurrence across the park and with other dinosaurs. Suspecting that it was an issue with their cloning techniques. Giving the perfect hunter a weakness to exploit. It's only a shame the movie characters never had that conversation.

[@TerribleLizards]

Like your vids and I think they are cool also I think you should post a lot about t-rex

[@ganados0]

The Dinosaurs in Jurassic Park were chimeras and inherited frog vision by accident, in the book Grant only catches on the Rex's vision problem after the attack and observes it in a Hadrosaur which only reacts when he and the kids wake up in a tree.

[@sgarciamoreno8359]

Love the vid, Can you make one about dilophosaurus, did dilophosaur had a frill and could it spit toxic things?

[@user-mp8wy8lp4y]

Well it didn't have a frill or toxic spit but it was surprisingly big

[@mikeylp6832]

Love your videos as always tray keep up the good work.

[@TREYtheExplainer]

michael pichardo Thank you!

[@HoveringAboveMyself]

One thing to note regarding Carcharodontosaurus, the skull reconstruction plays an important part in what the study found for it and that reconstruction is suspect, no one outside of Sereno and pals, in almost 20 years, has had access to the actual fossils of the skull of Carcharodontosaurus which actually was broken in dozens of small pieces. If the skull could be reconstructed with a shorter snout (and it can be, Carrano et al. 2012) and a wider back end of the skull, at least allosaurus-like binocular vision could be possible.

[@concept5631]

Hollywood T-rex: *can't see for shit* Actual T-rex: "Are you mentally underdeveloped?"

[@reallivebird520]

Now that you’ve mentioned it, I can’t stop seeing how human like the t-Rex’s eyes are

[@jeffreygao3956]

The two kids are Lex and Tim Murphy respectively.

[@XXRedHeadedLassXX]

Lmao I'm like a big kid when it comes to ridiculousness 3:09 I couldn't help but laugh ...the longer you stare the funnier it gets😆😆😆😆😆😆

[@jakecroc]

In other words, If a T.rex was looking for you, with it's just its eyes, if not it's superpowered sense of smell, if you so much as flinched, Game Over, Time To Run, if that'll even help. I dare say, there was probably LITLLE that escaped T. rex's senses. It truly was an awe-inspiring creature

[@Supersaurus4]

Nice video about dinosaur eyesight, very accurate explanation

[@blueknightgv7882]

When I was little I wonder the same question and thank you for answering it :)

[@parakeetbudgie]

*3:05** when i see a figure move in the dark*

[@valiapavlou]

Wow... I never knew all that stuff!!! Love your videos!

[@jorgesebastianvaldesreyna4283]

Men I love your videos !!! :D have great information and interesting things .

[@dylangeltzeiler946]

T.Rex: Hey, I have fine vision. As for one of those Jurassic Park Films, that’s all Urban. I we can see just fine. Especially seeing the helpless Young or weak prey.

[@greaterdanemark2397]

That T. rex face gives me fight or flight

[@mou.2]

Gumball! I love that show, keep up the good videos...

[@arvinsanolin3110]

Thanks Trey ... Pls do more Cambrian and Permian Animals too... I think those periods created the most fascinating forms of life to grace Planet Earth

[@squiddy9009]

4:00 Can I just say that that picture by John Conway is absolutely gorgeous.

[@jaschabull2365]

The one thing you didn't talk about, which I always figured was relevant was whether a tyrannosaurus would be instinctively wired to chase things which run from it. I'm thinking of the stories of cats who adopt mice who are somehow dim enough not to run from them, or frogs who get put in a room full of dead flies and starve, or people being told not to panic if a shark shows up, because that'll just convince them to chase you. I'm not sure if this question is one which would be easy to answer, but I'd say whether its predatory instincts were triggered by movement is probably just as important as how well its eyes work. Basically, I always thought that studying its actual vision capability alone is kind of misinterpreting the movie because the character didn't explain things well.

[@TheBubbalubba12]

Amazing channel, thanks TREY and keep up the good work! :)

[@TREYtheExplainer]

+TheBubbalubba12 Thank you!

[@jamesvanhoute6594]

Great video!

[@WhyTho525]

This was kinda fixed for The Lost World: Jurassic Park and Jurassic Park 3. In those films the Tyrannosaurs have good eyesight. In the Jurassic Park Novel it was explained that the T-rex had bad eyesight because of the frog DNA used in it's creation. In the sequel Novel, there was a guy who theorized that Tyrannosaurus Rex had movement based vision, like frogs and one of the villains shared this information with the other Villains. However it turned out that the information was false because one of Tyrannosaurs killed the guy who believed in that BS, despite actually not moving. In the films only the original T-rex seen in JP, JW and JWFK had the movement based vision thing, possibly a genetic defect caused by the frog DNA, while the other Tyrannosaurs from TLW and JP3 had good eyesight like their Cretaceous counterparts. Just a little info

[@webbess1]

T-Rex would have no interest in eating humans. It'd be like a lion going after a mouse.

[@efrainoctavio3506]

Carcharodontosurus sight reminds me of some birds sight. Sometimes birds do that exact same movement when trying to see something

[@thejurassicman661]

Keep up the good work. I'm rooting to see the next one. Will it be about dinosaur sounds?

[@TREYtheExplainer]

Dinosaur Kingdom Thanks and yes there will be

[@Gamingbroofbrogaming]

i love that you but the amazing world of gumball scene in that when i saw that episode i laughed SO hard

[@petyrbaelish1718]

I could just imagine being alive during the Cretaceous period and seeing a T-rex wearing a pair of glasses, running towards me. Then bumping into a tree.

[@Gorilla_Jones]

T-Rex is a stereo vision, eagle eyed, blood hound, 25 mph, wrecking ball. Perfect predator.

[@amrtawfik8932]

Could you also make a video about the possibility of Nanotyrannus exsiting? BTW: What did you think of national geographic's Ultimate Dino Survivor and dino death match

[@GaiusIntrepidus]

"In it's environment, the T.rex will completely ignore the animal, registering it as an inanimate object" I just realized from this line alone that Rexy's eyesight may have been completely fine, the only thing affected was it's intelligence

[@TheBelieveit1]

No wonder the devs nerfed the server with the KT Extinction balance patch. T-rex was too damn op. insane eyesight, unparalleled sense of smell, small yet strong arms, able to bite through literally anything...seems like the only potential weakness that's still hotly debated is "how fast was it" since I've seen many pop-science articles saying an average human could easily outrun it while there's potential evidence that it would have been decently fast (at least fast enough to catch a human)

[@themanofmemes4911]

Now they explain rexy (the films t-rex) had poor vision due to countless tests conducted on her Meh...i'll take it

[@digunder14]

@TREY the Explainer just wanna point out that apparently the motion based vision was do to the amphibian dna mainly toad, and that the ones in the future lacked this because they were in the wild and breeding out the amphibian dna, and a parently was addressed much more in the book the film was based off

[@atharvagangshettiwar8920]

Here's what I think. T-rex had strong eyes but weak brains. T-rex treated anything that doesn't move as a non- living thing and thought that the things that move are food.

[@spookyskeleton9334]

I love your videos dude, keep it up

[@TREYtheExplainer]

ShadowdarkGames Thanks!

[@JohnBloomsTale]

3:06 Nightmares!! xD

[@mstalcup]

Part of vision is how the brain treats what it receives from the optic nerves. Although Tyrannosaurus had the ability to form an amazingly clear and colorful image, its predatory response may have been hard-wired to engage only if movement was detected.

[@blxntz]

Trex had good vision a simple explanation

[@kcubuss]

Hey Trey, i got a question. What would be the perfect structure of an Organ for visual perception? A Vertebrate like eye, insect like compount eye or an mixture of both. What would such an organ have to fulfill to work anywhere in the envirement of the being possesing such eyes?

[@johnkalmykov7274]

I am more than sure you will grow to 1 million and there's nothing that can stop you

[@randomedude9303]

awesome video. I think the next video could be which types of dinosaurs survived the mass extinction. I know the dromaeosaurs survived but did any other dinosaur types survive like hadrosaurs or ceratopsid?

[@TREYtheExplainer]

Mauricio Alvarado Thank!

[@michaelhooper8559]

In the book the bad eyesight is present in multiple of the dinosaurs and is explained to be because ofthe dinosaurs being hybrids and having mixed DNA. Like how Frog DNA wasn't used for all of the dinosaurs so not all of them were breeding

[@stuparumihai6376]

God, I remember back in 2000 when all the paleontologist that apear on tv were claiming that T-Rex was a slow, clumsy, blind, scavanger only version of a Cretacic african eagle.

[@tankmen5686]

When you were too op in real life , so they had you nerf you afterlife