YDAW...Was Wrong: Velociraptor Follow Up

/ ydaw -- Mistakes were made. So here's a brief video correcting them!
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Sources and links:
We failed to thank him verbally, but Albertonykus alerted us to like half the stuff that made it into this video. Check out his blog!
albertonykus.bl...
Libby, et al. (2012)
Tail-assisted pitch control in lizards, robots and dinosaurs.
Nature 481, 181-184.
doi.org/10.103...
Frederickson, et al. (2020)
Ontogenetic dietary shifts in Deinonychus antirrhopus (Theropoda; Dromaeosauridae): Insights into the ecology and social behavior of raptorial dinosaurs through stable isotope analysis.
Palaeogeography, Palaeoclimatology, Palaeoecology Volume 552, 109780
doi.org/10.101...
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Your Dinosaurs Are Wrong
Attn: Steven Bellettini
1765 3 Mile Rd. NE #150248
Grand Rapids, MI 49505
'Your Dinosaurs Are Wrong' is a series that makes paleontology accessible to the general public using familiar (but wrong) dinosaur toys.

[@YourDinosaursAreWrong]

If you like our stuff, and would like to help us keep making it, please consider chipping in over at patreon.com/YDAW, or taking a look at our products at www.etsy.com/shop/YDAWtheShop, or by buying Steven a coffee at ko-fi.com/ydawtheshow . All proceeds go back into making the videos you see here!

[@eddyb1467]

Yay

[@MrLeopardgekko]

Damnn that's a lot of good stuff, didn't even know you guys had a an etsy store, but I've got a feeling I'm gonna be spending quite a bit of time there now haha

[@SethSiuda]

We all make mistakes.

[@bill4665]

I'm not promising anything but I will try my best to get some stuff from your products lage if my parents let me that is

[@300leanbulked]

Do comsagnathus

[@drgrounder]

I love how bitter you are over the fact that they didn't make a robot Velociraptor. Your feelings are understandable.

[@maryudomah4387]

Wait... you’re humans and *not* just dinosaurs in funny people suits?

[@soopershpee5842]

impossible

[@arrowsaurus7561]

Oof, my life is a lie

[@animationspace8550]

they are trying to shake us off their trail

[@idontevenknow8689]

DANGIT

[@limey461]

@@animationspace8550 *cough* or should one say.. *cough cough* "trying to shake us off their.. 'Tail'"..get it? wha-..no? oh.. okay then..

[@58209]

3:04 "...because they couldn't make a robot velociraptor for some reason" i smell a jurassic park/terminator crossover

[@cthulhufhtagn2483]

"Day 119. Subject is showing advanced mental capabilities, and has at last figured out how to open doors."

[@58209]

"jurassic park": kids escape from velociraptors using the reflective steel surfaces in the kitchen "jurassic park: terminal impact": robo-ciraptors with rogue AI learn to take advantage of the reflections in their packmates' metal bodies to locate their prey

[@equinoxomega3600]

I guess funding issues ... but on the other hand, doesn't the term "Robot Velociraptor" already sell itself?

[@claytonodonkazakhstans1335]

XD

[@laurachapple6795]

From now on the floofaraptor is the only version I will accept.

[@wadespencer3623]

Given it lived in a desert, I don't think that's very likely. Buuuut more arctic relatives? Floof seems entirely possible there.

[@RedDeadSakharine]

@@wadespencer3623 I mean, Ostriches live in savanna 🤷‍♂️

[@th3gr1zzlyk1ng8]

@Sastrei but Ostriches have naked heads and legs though

[@bashful_vixen2020]

@@wadespencer3623 Ostriches live in deserts and they are heavily feathered, not saying they wouldn't have bald spots, but you can't compare feathers to fur for appropriate coverage due to temperature. And as you would know, deserts swing from scalding to freezing within a day, who says that the feathers weren't there for both extremes?

[@dmdizzy]

@@wadespencer3623 Feathers are not fur. They provide two-way insulation, reflecting external heat away and maintaining internal temperatures by reflecting body heat back inwards.

[@58209]

i was so taken by your in-depth history of paleontology in your velociraptor episode, and now i'm doubly impressed by your dedication to correcting mistakes with a follow-up video. i look forward to catching up on your videography and learning more about paleontology.

[@MylotheZooLovingScientist]

You're in for a fun time during your YDAW binge, I can assure you that!

[@OneTrueNobody]

YDAW is an interesting series for sure. The older episodes don't go quite as strongly in-depth as the longer new episodes hosted on this channel, but even then there's fun stuff to learn and consider. The Allosaurus episode is a particular favorite of mine.

[@kentrosaurusboi3909]

Trust me, you have found a gem in this channel!

[@diegolopez3989]

Its okay guys, everybody makes mistakes. Keep up the good work.

[@DaisyDuketh]

@@NelsonBrown 😐

[@AnachronousRex]

This Et al person is amazing. They show up in sooo many papers.

[@appa609]

Someone should really name their kid et al. He'll get so many citations!

[@YEs69th420]

There is no excuse on this Earth good enough to excuse the lack of robot velociraptors.

[@casychapin4647]

I want to build one...

[@Ahalaya]

There's a hotel in Japan that kinda has one... Granted, it works the first desk for English speakers, in uniform, but...

[@helloworld2409]

excuse: have you seen terminator?

[@soopershpee5842]

idk, that velociraptor still needs more floof

[@cloud_and_proud]

They're birds, right? Those wings are too small for flying. Clearly, they need enough floof that they can float like a dandelion seed.

[@donaldbell2554]

I like that word its fun to say slow too ffffllloooooofff

[@TheEsutan]

We Need MAXIMUM FLOOF! A Velociraptor that's just a BIG ball of FLOOF!

[@unholybeing6414]

Give him so much floof that he can float to catch prey

[@claytonodonkazakhstans1335]

Cloud Angel they are not birds. Birds are dinosaurs and he didn’t fly.

[@martonk]

So nice when content creators actually take the effort to correct themselves to be as accurate as possible

[@Snekky1]

pls do a spinosaurus follow up 🥺🥺 we learned a bunch of new stuff in 2020

[@Riceball01]

The thing is, he needs someone to send in a spinosaurus toy for him to do that. Remember, he's not a general dinosaur of paleontology channel, he specifically reviews toy dinosaurs and compares them to what we know so far about the real thing. So, if you want him to a video on spinosaurus then send him a spno toy to review.

[@Ezullof]

I'm aware of the discovery of structures on the tail that indicate a triton-like tail, but did we learn something else, Because afaik a lot of things have been extrapolated from this point alone, and in the YDAW's video the idea that Spinosaurus was a semi-aquatic animal was already presented. The tail is just more evidence for that hypothesis.

[@annedavis3340]

@@Riceball01 he already has a spinosaurus toy. He already did a spinosaurus video about the toy. Since the video, there was a BIG change to what we PREVIOUSLY knew about spinosaurus, because previously they didn't have fossils of a spinosaurus tail, and now that we DO have the tail, there have been implications that it probably used its tail to swim. That is why people are asking for an update video, and why people asking for an update video on spinosaurus without "sending in a toy" is OK.

[@D31taF0rc3]

In his last livestream he coloured in the new spinosaurus and brought up all of the new discoveries, its not different enough for a new episode

[@VelociraptorsOfSkyrim]

@@Ezullof I am hoping for an update because the 2020 paper debunked the ridiculous Quadtrapedal Spinosaurus many people *still believe.*

[@carnotv6136]

*Everyone makes mistakes in the heat of passion jimbo*

[@scorinth]

Love the children playing soccer metaphor.

[@francesconicoletti2547]

I’d love to see a Velociraptor illustration with Emu levels of fluff. Semi arid to desert dweller high energy lifestyle. Delivers a mean kick.

[@patreekotime4578]

And remember that floof is an excellent sound damper and assists birds like owls in hunting. I imagine a silent predator with decent vision at dusk as pretty terrifying.

[@dibershai6009]

But the quill knobs mean that it had flight feathers, not just down

[@OrdinaryEXP]

@@dibershai6009 Then may be sparrow or bushtit level fluff...still has wings but puffs up like a cotton ball when cold.

[@jredmane]

On pack hunting, we have an extant pack hunting dinosaur today, the Harris's Hawk, Parabuteo unicinctus. They live in family-based cooperative groups like coyotes or wolves with the reproductive female being dominant, followed by her mate and then the young of previous years. They also hunt cooperatively to provide for the young. So it is possible that nonavian dinosaurs could have that degree of cooperation too!

[@justtetsuo7175]

Secretary birds, and other predatory birds, also often hunt in pairs, so it’s not at all unreasonable to assume that velociraptor could’ve had an advantage hunting small or even larger prey in pairs.

[@Everett1107]

You’re telling me you guys don’t know everything!? Impossible!

[@cloud_and_proud]

You're telling me that science is a continuous state, in which nothing is ever 100% known, and our conception of reality changes all the time, by design?

[@cthulhufhtagn2483]

@@cloud_and_proud It was a joke, mate.

[@arrowsaurus7561]

Cloud Angel it’s was a joke

[@solidified-spinosaurus]

@@cloud_and_proud r/woooooosh

[@bugbugbugbugbug5059]

@@cloud_and_proud How did three people not get that you were joking too?

[@lewisfitzsimmons1271]

Dinosaurs, publication research and intellectual honesty? Please never let this end! Patron all the way, recommended :)

[@jeffreygao3956]

Interesting. Well, that was still a pretty good episode. I do love Velociraptor. To recap everyone's unique intro: Scelidosaurus: Just handed in. Stegosaurus: Dangled by string. Plateosaurus: Tossed and caught. Dimetrodon: Summoned by magic. Dilophosaurus: Uncovered by water cup. Pteranodon: Teleporter. Parasaurolophus: Launched through time portal or something. Tarbosaurus: Dropped by plane. Euoplocephalus(or is it Scolosaurus?): Handed in by trash picker. Tyrannosaurus: It's just there from the start. Therizinosaurus: Carried by fire truck. Apatosaurus(that might be Brontosaurus): Magically summoned again. Pachycephalosaurus: Portal. Deinonychus: Mecha sauropod(dunno which genus of sauropod probably Apatosaurus) carries it in. Triceratops: Falls out of a tube. Spinosaurus: Sent by exploding envelope. Giraffatitan: Sent by slide. Carnotaurus: Pulled out of a hat. Allosaurus: Sent by slinkys. Archaeopteryx: Fly in. Styracosaurus: A whole frontal charge. Velociraptor: They just show up. Amargasaurus: It just shows up.

[@ActuallyAFungus]

I want a Flufforaptor plushie.

[@annedavis3340]

If someone makes that happen, I too want one

[@timpeters7852]

Merchandise it!

[@seretith3513]

Microraptor is Suitable for this

[@predattak]

YES me too!

[@aspenostrom4015]

I actually own a little fluffy velociraptor plush. They do exist!

[@anserbauer309]

Listening to your explanation of velociraptors hunting collectively, but without the level of sophistication of a coordinated mammalian hunt made me think of the way my chooks all chase a mouse; it's not coordinated but simply works because the mouse has nowhere to go and it ends up being pulled apart by however many birds can get a beak-hold on it. But then there's the guineafowl which work together to kill a snake. That's more sophisticated than the chooks. They take turns to jump in and kick/peck the snake until it's dead, but they just kill it where they corner it, rather than 'plan' any obvious strategy, as far as I can tell.

[@manueldejesusrojassandi3919]

Not everyone has the guts to admit their wrongs, and it's great to know you guys are up to be honest about it in the name of science.

[@elianapatt]

Oh, lovely, a corrections episode! corrections episodes are the best

[@pjnoonan1423]

Good thing you guys made a video addressing the mistakes, instead of just ignoring them. Very mature.

[@saulodoamordivino]

Fluffaraptor is the only verison I will accept now and I will pester the competent parties until they make it official.

[@timothymclean]

Comparing the way wolves and lions hunt (and _Velociraptor_ may have hunted) to pro soccer players and five-year-olds getting the ball into the net was a great analogy that I'm unlikely to forget.

[@DysnomiaFilms]

Funny how the most recent interpretation of Iguanodon almost has as much in common with the original interpretation as the one we had in the mid-20th century.

[@JosephFlores-yn4yi]

Wait...what?

[@kevinstephenson3531]

@@JosephFlores-yn4yi walks on something akin to all fours.

[@bill4665]

" 5 year olds randomly chasing the bal, and eventually getting the ball in the net at some point" XD

[@robertcartwright8165]

This is terrific. You're not just an advocate for scientific accuracy; you exemplify rational judgement, and that is presently something in short supply. Bravo!

[@apothocareon7521]

There is also the interesting case of the coyote pack phenomenon which happened in Yellowstone during the absence of the wolves to use as a pack hunting progression of a not normally pack hunting creature adapting the behavior to succeed better. It was an interesting note, since Coyote aren't normally pack hunters, but sometimes live in brief family groups until pups can care for themselves.

[@Gildedmuse]

They're pretty much seeing an empty niche and were like, "you know what, screw this. Let's not wait until evolution fills this spot. We'll just do it ourselves!"

[@carmelosaurus7480]

3 interesting that happened to me today • 1st my baby sister was born • 2nd I found 2 baby blue jays • 3rd a YDAW video How in the world can my day get anymore interesting

[@arrowsaurus7561]

Ooh you have 2 baby dinosaurs and a little sister Awesome lol

[@Rumjunkie176]

I am so excited this series is still a thing, I love this!

[@TroyBlackford]

So glad I just found that your work had migrated! Took six years for me to learn this! One of my favorite things.

[@HoltzWorks]

Couldn't it be that Deinonychus organized themselves into age-segregated packs? Younger ones stay together for safety against predators but hunt small prey alone, as they grow up the pack starts going after larger prey that then require coordination.

[@DianitaYoutube]

Seeing this and the first video two months ago, they behave a lot like chicken, well not the hands, but I've had chicken, and I've seen them hunt rodents, small lizards, large insects and small birds and they look like tiny dinosaurs, plus they are quite intelligent and curious, and also cute and sweet because I had one as a pet.

[@Gildedmuse]

Chickens are the devil's bird (okay, I'm sorry, I only lived next to them, not had them, I just don't know what I did that made those little bastards want to attack my every step) but this brings up a related topic. Domesticated chickens and wild turkeys are found in groups while obviously not considered "pack" animals. But I've definitely seen two chickens tag team one another (on a fucking duck! Like what did that duckling do to you! In fairness, the duckling wasn't supposed to climb the mesh. I went to get the neighbor but like... I'm not jumping into a chicken yard to save anything short of an immediate relative. I'm not kidding those things hated me. Anyway, chickens hate ducks is what I learned.) I'm actually surprised he didn't mention how birds can live in groups which can result in those animals attacking the same animals without being the result of pack hunts. Those "social groups" can even exist when the children have a different diet. Basically, you grow up in a nest, wasting certain foods and with certain individuals, and then you grow up and you find a group of adult animals to mate/sleep/live within, while still mostly supporting yourself hunting wise, but it offers protection. However, I can't think of any highly predatory, land based hunters that engage in this behavior. It seems more common in insect/fish eaters that may gather in large quantities. To be fair I'm an English major who just loves passionate people, but it's not my area of interest, so I could just be ignorant.

[@joseykate8510]

@@Gildedmuse Oh man, i have chickens, they group up on my boot. my boot, they all gather round and before you know it i have a hole in my shoe, Ive seen them peck rabbits squirrels small birds and themselves. If you've ever seen a hen grab a worm while others are around.. sheesh they will push they will grab they will fly ( somehow ) they will steal.

[@MaryAnnNytowl]

I'm now even more impressed with thus channel, having found this entire video just on clarification and errors on a previous video! Not many channels do that (Anton Petrov, Dr. Becky, and Kyle Hill are the only ones that come to mind, and only Anton did an entire video like this just on errors). Congrats!

[@dubbixdub4376]

I hope some day, You can do a video on plesiosaurs.....even though they aren't dinosaurs

[@thewingedporpoise]

They did one on dimetrodon

[@Neo-mn2wf]

and pteranodon

[@seretith3513]

Dimetrodon speaks more, cause they weren't even Reptiles

[@Rynosaur94]

I love these types of episodes. It shows how dedicated you guys are to the science. Science isn't about being right, it's about learning the truth and inductive reasoning. Mad Respect.

[@clockworkkirlia7475]

This is the sort of self-aware dedication to accuracy that I love to see in educational KZbin! Plus, y'know, more cool dino facts!

[@horse14t]

You should do a mini episode like this for the updated Spino.

[@donaldbell2554]

That would be 😎

[@bill4665]

This dude is great hes not afraid to admit he gets things wrong but honestly I think this dude is one of the best dinosaur youtubers bcs gaming beaver mostly covers Jurassic park films not dinosaurs themselves

[@CruentusV]

...and this is why I enjoy these videos as much as I do.

[@michaelbaker1660]

When the deinonychus paper came out, I immediately knew that the pack hunting issue would need addressing. Grateful for showing your fallibility as it goes to show that there is always more to learn. I hope that you’re preparing a video like this about Spinosaurus aegptycus considering you altered the image that was coloured in to match the most recent reconstructions (I really like the colouring streams). Could you potentially use the stream time to go through some toys that maybe don’t have enough errors or are not detailed enough to make a full length video from? As I would watch that as well. On the subject of ‘pack/cooperative hunting’ would it be a possibility that this particular strategy would occur when taking on an organism above a set multitude larger that the preadator itself. Working as a unit temporarily to bring down a prey item, then once consumed, retuning to solitary lifestyles. P.S. cannot wait for Amargasaurus and thank you for your unwavering efforts to modernise the past. :)

[@andrewsuryali8540]

Pack hunting isn't necessarily a way to take down prey larger than the animal itself. The case of lions mentioned here is a good example. Lions are perfectly capable of taking on and killing animals twice their weight without assistance. Conversely, lion packs actually tend to take down animals of equal or lesser size and weight than each individual lion, such as juvenile and infant wildebeest. The real reason the lions would hunt together as a pride is because the target needs to be separated from its herd and a single lion is simply unable to do this.

[@brettgabbitas1852]

@@andrewsuryali8540 Given how small Velociraptor was,protection from bigger predators while hunting might also be a reason.

[@gwenpoole1071]

I love any channel that's able to correct itself. Super important to show people that even scientists get shit wrong and it's okay!

[@jackkoffin1]

With regard to things like plumage and behavior, it is important for lay-people, like myself, to remember that these were animals that existed on a very long term continuity, like animals we see today. What I mean is, that the species survived across enivronmental and circumstantial changes over lifetimes and generations. So some Velociraptors, for example, might have hinted in groups and some maybe didn't. Certainly some may have had different colorations than others, and been more or less fluffy. It certainly isn't true that all lions, everywhere, look or behave exactly the same. Some are more or less aggressive toward humans, some live in large prides, others live solo or in very small groups. Some male lions have huge black manes while others have almost no mane at all. If we only had a handfull of lion skeletons to study we'd be able to say almost nothing about the range of lion behavior.

[@sabre0smile]

Corrections are much appreciated! ...heck, any video from this channel is always great to wake up to

[@auratiger6864]

I (personally) find that the lion like socialization seems most likely. Where the male would just kinda wander off, occasionally coming back to see if their still alive, and the mom raising them, but making them leave after. And siblings sticking together till they learned how to effectively hunt on their own. Sometimes leaving in groups of 2-4 or even sometimes going on their own. I feel like this is the most likely scenario. Of course this is just what I think! GREAT JOB BTW!

[@kropotkinnie]

i'm always so weirded out by you not having more subs; you make some of the most fantastic stuff on youtube!

[@dmdizzy]

Something interesting to note about JP raptors, at least in the novel - while they're disturbingly smart and hunt in packs, they actually don't care at all for their children. It's speculated in the second book that this is because they have no truly natural raptors to learn parental behaviour from, and are left purely to the whims of their (freakishly violent) instincts. The evidence from the paper you mentioned already points to adult dromaeosaurs not really caring for their young (like you said, they'd be feeding them from their own kills if this were the case), so it's possible that they could have lived in a similar way. Still seems pretty unlikely, I expect it was more like Komodo dragons where they converge on larger prey animals and engage in opportunistic feeding and cooperation.

[@dr.masiaka7048]

Other than the wild isla nublar raptors, of course. The Isla Sorna ones have been speculated to act the way they do because of DX.

[@Ecotasia]

I was watching some interesting footage of eagles hunting in pairs, using the sophisticated decoy predator side ambush depicted in Jurassic Park, it was interesting in light of the recent paper as they brought up how modern archosaurs hunt and saying the wolf pack hunting is not present in them as part of the discussion I believe.

[@arrowsaurus7561]

Backyard Expeditions ooh where’s a link, I think I’ve seen that before

[@TravisMcInroy]

It's so great to see someone with the humility and the intellectual honesty to admit when they were wrong or when they simply don't know an answer. Nobody knows everything and that's why science is so important. It's a constant learning process that places a positive focus on intellectual honesty and humility. Thank you for these videos.

[@titanofserpents4315]

I think that since the Harris Hawk lives in the desert and hunts in packs and Velociraptor also lived in the desert, I think Velociraptor could also have hunted in packs possibly in a style similar to the Harris Hawk.

[@Ezullof]

1:27 sure but why would feathers on a dinosaur cover the animal in the same way as for a modern bird? The big thing about modern birds is that they all evolved from flying ancestors. So even if they don't fly themselves, they have an ancestry that needed an aerodynamic profile at some point - and when you look at most non-flying birds, they aren't very fluffy (with a some exceptions that aren't very velociraptor-like in their behaviour anyway). Given the ecological niche of velociraptor, I think it's safer to assume that its profile would resemble the one of other small predators, even if they are more distant cousins, or of non-flying predatory birds. In both cases the vast majority of examples points towards a more streamlined profile, except for animals that live in the arctic. So yeah the velociraptor could have been more fluffy, but it's still unlikely.

[@Valtieldan]

Is there any land-based, light bodied, non-flying based predator in the fossil record that could be considered that fluffy, be it mammal or bird? Birds that evolved from flying ones don't count. I feel people try to make Velociraptor into an almost full fledged modern bird way too much in paleoart. It's not an actual bird. It doesn't have the specialized body of a bird. It had feathers but didn't fly. It would be an exception, no? Microraptor and others are not even that fluffy. I think making it look like a sparrow is already leaving any claims of "doing it for scientific accuracy",that many people use,behind. We don't have examples of that to draw from other animals, , so it feels really forced.

[@dinosaursergent2648]

I read an old book that while occasionally inaccurate, had some very modern ideas for an 81 book. It talks about dinosaurs as smart, active, bird like creatures. It also shows deinonychus hunting together out of desperation competitively rather than it being planned and cooperative. I like that book, and while it isn’t completely accurate (semi-aquatic hadrosaurs for example), it is still interesting and has a unique (but most likely inaccurate) art style. The book is called The Dinosaurs by William Stout.

[@alecboi777]

i can respect a guy who corrects his mistakes

[@GrymmsPlace]

A lovely channel. It should be mandatory :) I always wonder why, when discussing theropod behaviour, specifically ones such as Deinonychus and Velociraptor, we tend to 'romanticise' mammalian behaviour and not birds such as the family Corvidae (ravens, crows, et al), Ostrich, Hoatzin, Emu, Rhea? They seldom hunt in packs (though Harris hawks do - thank you David Attenborough for showing those in your series). Many stay in large groups and still do not hunt in packs. Others are omnivorous obviously. Watch a group of starlings move through a field of grass. Canadian Geese too. Loving this channel (and the predecessor). So informative and interesting. Excellent! Thank you for taking the time to produce them.

[@caimansaurus5564]

Well, because theropods, being land-based carnivores, are more analogous to mammals than to any bird, at least ecologically. Modern mammal hunting behaviors are specifically adapted to hunting on land, unlike modern bird hunting behaviors, and so are a more applicable model for theropod hunting behavior.

[@td1559]

I really like the animated Iguanadon outro, have you ever done a full episode on Iguanadon? (I can't find it if you have, if you haven't its definitely one I'd like to see)

[@astphaire]

0:35 I guess you could say they had a convergent revolution

[@alinaserafimova3368]

Underappreciated comment

[@danny5551000]

I wonder how long its going to take before Australia has something put on the board

[@dinogeek9085]

Well they just found footprints of a large Jurassic theropod over there so you kind of got your wish

[@kasyu1101]

the maximum floof velociraptor is adorable and I want a plush of it.

[@AzraelThanatos]

For group hunting, it's also possible that it was a seasonal thing. For instance, perhaps during the time of year when they would hatch, there would be more plentiful insects of smaller game that would be appropriate for hatchlings and other younger members to learn on, and, potentially, a smaller, stable social group of parents and their young, then as the seasons shift, there would be more plentiful, larger game and the various family groups would interact for hunting and would also function to push the near adults and single velociraptors to be around others of the species to push for mating pairs, the abundance of food also being a time to store up and stockpile for nesting before the herds move on and the small, scavengers become more plentiful to feed the young off of again.

[@thebunkerparodie6368]

this format should be use for updating old episode

[@kelechionyensohii9720]

I personally think that most dromeosaurids were solitary. Dromeosaurids show multiple signs of being highly territorial and downright uber cannibalistic. The only thing we have that could suggest a gathering is the Utahraptor mob fossil where it was unorganized and messy. Also, even if deinonychus was a pack hunters (which I highly doubt), that doesn’t mean that every dromeosaurid were pack hunters. Just because wolves hunt in packs, that doesn’t mean coyotes and foxes hunt in packs. A better example would be lions, the only pack hunting feline that we know of. Pack hunting isn’t always necessary while hunting prey larger than you are. A lynx cat can surprisingly take down a mule deer in the matter of minutes. Down to my last point, there is no way in hell, pack hunting or solitary, that a dromeosaurid could take down a hadrosaur or large basal iguanodont. People forget to realize that hadrosaurs were MASSIVE. Edmontosaurus annectens almost DWARFS tyrannosaurus. Although tenotosaurus was not as big as edmontosaurus, only having their hip reach the height of a human, deinonychus was still hella smaller and lightly built. A 120 - 220 pound pack of paravians hunting a 2,200 - 4,400 pound iguanodont is like a pack of Lycaon with plastic knifes in their mouths to hunt a Rhino. If I missed anything, feel free to reply

[@Elukka]

There are some tracks that indicate group behavior in dromaeosaurs: www.sciencedaily.com/releases/2007/10/071028171034.htm Of course what you said about wolves and coyotes applies - dromaeosaurs are a big and varied group and it doesn't necessarily apply to all of them. It also doesn't show cooperative hunting, but it does show them moving in a group.

[@lamella64]

I just like learning new things. that's kinda the reason why i love spinosaurus. that thing seems to morph around every other week.

[@omegamog]

I just watched the video right before this and I'm impressed with myself for how many of these stuck out for me.

[@joschuaknuppe5849]

Great to see you guys making this video =)

[@greensteve9307]

Great analogy! "All we have is the ball in the goal"

[@BiosphereDotA]

This kind of thorough corrective review of one's complex 1+ hour thorough corrective review really is thorough.

[@pridethesaint]

I love these videos so much and love your passion for paleontology and speculative art... but as an old mograph animator, special props go to the graphics people/person. That dino-fuzz dial was so good.

[@Mephilis78]

Would you consider doing an Ark Survival Evolved video... or a video on The Isle... I just want to see you try to play one of these.

[@terrynewsome6698]

Honestly if raptors did hunt together it would be like red tail hawks and less like wolfs. Also it could have easily varied from specie to specie bases. We know some lived in trees and others open salt flats. And depending on where they were would mostly affect how they hunted.

[@shadowminor]

no dino will ever be fully done. new findings and new lines of thinking will always come up. in twenty years we may see them very differently than we do now and my look back and wonder how we had it so wrong.

[@cvjanzen550]

The extra information you covered in this follow up is great! Thank you!! My son and I hope to contribute!

[@casychapin4647]

There really is allot of veriety of social behavior in animals, whether it's basic mobbing of smaller predators like foxes, and crows around large predators, or large groups at birds living together to nest but hunting separately. It would be interesting to see if that paper about the different diets in young and old velociraptors referances similar study's done on modern animals that raise their own young, and modern animals that do not.

[@JohannesVIII]

Just discovered your videos and they are super interesting! It's human to make mistakes and I really like that you took the time to make a video just to address them instead of annotating the first one ; please keep up the good work!

[@generic8891]

Hell yeah YDAW! Well, YDAWWW?

[@rats_3]

My personal belief for the pack hunting debate is that they behaved somewhat like komodo dragons, where they would "cooperate" in the sense of all attacking the same thing, but doing so in an uncoordinated way and for their own gains with no thought of the other animals involved as they would normally hunt alone.

[@handkc12]

Hey, you gotta do this on Spinosaurus this time, it's not a mistake, but it's still an updated information.

[@annagiesking5828]

I absolutely love your work and I'm glad to see you on this channel. You're doing great work. The best part about science is that when you admit you're wrong, it's admired not shamed. Way to science.

[@Chordat3]

That outro animation is enchanting!

[@Minyassa]

I was disappointed not to see any Floofraptor items in your shop, please consider adding some? :)

[@ravendarkstar]

This always makes me want to look at my old Dino toys from the early 90's and nit pick. I do in Walmart when I look for new ones. Hardly anyone can get the arms ~ or really lack there of~ of the Carno correct. Also those who put a third finger on what they label as a T-Rex.

[@bkjeong4302]

Wolf-like pack hunting (family groups) is far from the only form of cooperative hunting to involve complex coordination. Plenty of animals work together organizedly while hunting without living in family units: some of these live in same-age social groups of unrelated individuals (some pinnipeds, Humboldt squid, various predatory fish), while others are solitary hunters that can join forces as necessary (crocodilians, etc). In the case of Velociraptor, Protoceratops probably wasn’t so big that it requires pack hunting, but for Deinonychus it’s possible, albeit not in family groups (more like same-age social groups or on an opportunistic basis).

[@SpinoAdri2001]

Please do another of this videos fixing the Spinosaurus episode!

[@LuigiG145]

Also Joschua Knuppe's name is pronounced like "Nu-pay"

[@SophiaAstatine]

Can't believe that after caring for so many five year olds, I only now realise they're pack hunters.

[@jettpreece6932]

Ur so honest

[@GandalfTheTsaagan]

I like this section! It's also a nice way to comment on new research that couldn't be included on the 'main' vid

[@Snowfire0903]

I'm glad I'm not the only one who takes issue with Jurassic Park and all the misinformation that's been sewn into pop culture

[@volbla]

That is a dymaxion map! Big respect, yo.

[@toobossforchuck]

"Because they couldn't make a robot velociraptor for some reason" has me laughing xD

[@Ugly_German_Truths]

Whow the outro was fabulous, that Iguanodon simulation through the ages ... i think I've never seen something like that done with dinosaurs before, just with mammalians (especially the Intros Gutsick Gibbon draws for her own videos, that obviously go the hominin route) and I seriously like it. Are there any others I did not notice cause... Patreon names are the "exit" sign, sorry...

[@AntoniusTyas]

Perhaps the pack hunting in Maniraptorans (and to a certain extent, other theropods) were just a less-coordinated method to take down bigger prey in comparison with the likes of orca or grey wolves. After the dinner is down, it's each to their own.

[@treetheoak8313]

Love the new outro!

[@Saeto15]

I’ve never really understood the idea that a bird ancestor would be hunting in the same way social mammals do. Pack hunting as a focused group isn’t really how birds operate. Yeah, I know dinosaurs weren’t birds and it’s not really a 1:1 comparison, but it’s probably better to wait until there’s more definitive evidence before declaring one way or another that they were pack hunters.

[@aaronodst1174]

Soccer analogy was v helpful

[@DeepPastry]

Little'uns having a more varied diet could just be an indication of an insectivore stage that greatly enhances their food intake. Still participating in the big kill, or even regurgitation from a main kill, but their days could be spent hunting insects. small mammals, reptiles, etc around a nesting/roosting area while waiting for the adults to return. Which could indicate a more advanced pack group, along the lines of Wild Dogs.

[@nilnudbow1]

Baryonx or some spinosaur like that. Also maybe you could do carnosaur like carcaradontasaurus? It's up to you

[@lucasvega4216]

I believe Deinonychus most likely hunted like lions rather than wolves (if they did it at all), in the sense that they hunt alone a lot but share their prey with the familiar group and cooperate when they found a big prey. Paleontologist love to compare them to wolves and use the ''changing diet'' to desmise the pack hunting theory, but the true is that non flying birds that have lot of chicks normally don't feed them, the chicks search their own food and their parents only provide warmth and protection. TLDR: Deinonychus hunted like lions but rise their young like chickens. PS: The ''five year old chasing a ball'' theory (i know you said it like a joke) is not that farfetched, that's how coyotes, hyenas, painted dogs and Komodo dragons take down big pray, and Komodo dragons don't even live in packs, neither do coyotes all they do is share territory with the familly group, sometimes they hung up together but that's all. Pardon my english.

[@chulo113]

A true scientist