The Giant Bear That Could Have Taken On Allosaurus

[@MetastaticMaladies]

Imagine you’re a hunter-gatherer in South America, just doing your thing, hunting deer or something and suddenly you come upon Arctotherium, just a giant beast. Terrifying!

[@jaromor8808]

one word: Brazilian jiu-jitsu

[@tyrannicaltypomichaeltester]

​@@jaromor8808 would be useless agaisnt this bear

[@LS-vo7hc]

Derp

[@maynardlikethecandy5347]

Well if that scenario happened, the guy might have been one of the first peoples in South America, who happened across one of the very last of these gigantic bears!

[@trvth1s]

These bears were highly omnivorous. So were many large mammalian ''predators'' including the terror pigs. The largest mammalian hypercarnivores were significantly smaller: the hyenodonts and later the big cats. We can't compare them to the mighty predators of the Mesozoic

[@triqniq]

I really enjoy how you show pictures along with the species you list off, which helps to visualize everything better. Appreciate all the great vids!

[@dino-gen]

Thank you, I appreciate you enjoying them :)

[@sassa82]

Thank you Henry Cavills brother. This was an interesting evolutionary history of the species of giant short faced bears!

[@dino-gen]

You are more than welcome! Thank you so much for watching and the VERY kind comparison lol

[@DanielMontgomery-l2z]

I didn’t see it, then I saw it lol

[@dino-gen]

I still don’t see it, but I’m defo playing along with it 😂

[@dannielaston7097]

Absolutely incredible content creator and presenter. Deserves infinitely more interaction.

[@dino-gen]

Wow, thank you! It means a lot already that you enjoy it :)

[@primordialpouch1139]

Been here since the first couple of videos, always loved your style and cadence, keep doing what you do brother!!

[@dino-gen]

Thank you, it really means a lot that you've stuck around so long :)

[@marsfire4336]

Great video. Would love to see a future one on the American Lion and a size comparison between the American Lion and Arctodus Simus. So cool to think people encountered these in the past.

[@Williameagleblanket]

I remember seeing a display of this bear at a museum about 10 years ago. Along with Colombian Mammoth and other animals long gone. It was awesome. Great video. 👍

[@jabbarmuhammad]

One of my favorite prehistoric predatory animal

[@uncletiggermclaren7592]

Agreed. Wish we had some way of filming the deep past, it would be amazing to watch a nature documentary of them.

[@harsha1989able]

Mine too...

[@harsha1989able]

​@@uncletiggermclaren7592true...

[@pierre-samuelroux9364]

Prehistoric planet being one of the most acccurate doc about prehistoric animals:​@@uncletiggermclaren7592

[@pierre-samuelroux9364]

​@@uncletiggermclaren7592and before there walking with beasts

[@CryptoJordanVR]

Actually the biggest reason why mammals don't get as large as dinosaurs isn't because of our bones. It's because of our metabolism. Mammalian metabolisms are much higher than most other animals. If you scaled up an elephant to the size of a sauropod, It would cook itself from the inside out with its own body heat.... It took a lot of evolution for sauropods to get as big as they were and this included massively slowed down metabolisms. Whales have extremely slow metabolisms by mammalian standards but they also have the aid of the water to cool down their bodies.

[@etinarcadiaego7424]

Dinosaurs were warm-blooded though

[@oiltoast3723]

Mammals also lack a pubis bone and a long tail.

[@mikehewitt2146]

Ok then never thought of that makes sense

[@juritudi57yearsago59]

@@etinarcadiaego7424most likely mesotherms, no way a trex can be completely warm blooded and be a hypercarnivore like that

[@trvth1s]

@@juritudi57yearsago59 Theropoda today have a higher metabolism than mammals. All dinosaurs, including the mighty titanosaurs, have growth rings pointing to a metabolism as fast if not faster than mammals. They had an extremely fast growth spurt only possible with a very high metabolic rate which even mammals can't match. Trex lived in an enviroment with 2 ceratopcian species that were larger than Bush elephants [largest terrestrial mammals today], 2 ankylosaurid species as large as Asian elephants, an ornithopod as large as bush elephants [and with herds larger than any mammal ever had, including bovines],in addition a land whale Alamosaurus. On top of that, trex was a hypercarnivore, it wasn't omnivorous like the south American flat faced bear. Dinosaurs were better as being bigger and stronger, and this allowed for giant carnivores to evolve, and they needed to in order to keep up.

[@erichtomanek4739]

Arctotherium is just a big lovable teddy bear 🧸! As long as they're well fed ... About keeping dinosaurs: I have a book that has all the information on keeping many different types of dinosaur. It also has side notes that a really quite useful, such as: Worryingly intelligent. Worryingly stupid. Likes children. Likes to eat children. Extremely flatulent. These are just some of the quick tips.

[@michellek3714]

Love your content!

[@brucefsanders]

Distractingly cute... I like this baby faced look... Keep up the good work ‼️ 🙊

[@brianwilcox2543]

Another nice video. Thanks! I do like the viewer's Q&A segment. If I had a big place in the countryside, I'd like to have some kind of Ceratopsian. If I could have a mammal, my pick would be a rhino.

[@AngloSaxon1]

Great video, really well researched and good presentation.

[@debbieannsmith8962]

Great video. Keep up the amazing work. 😊😊😊

[@bradschoeck1526]

Love it! Ice age mega fauna is one of my favorite subjects! Would love to hear your thoughts on the YDIH & if you believe it’s nonsense, why? Id love for someone to actually refute the hypothesis with rational, logical, factual evidence as opposed to using logical fallacies.

[@LoudmouthReviews]

My zoo has 3 Alaskan male brown bears that each weighed over 1000 pounds. They are super intimidating but it’s crazy this bear was bigger than all 3 combined 😳

[@Daisuke2788]

I liked the example and answering questions regarding domestication. How strong was the bear in your vid

[@glennquagmire1747]

I find this video fascinating 👍

[@adamwinter2627]

There’s a great book by Robert Mash called how to keep dinosaurs and it’s an ironic manual on having different species as pets. It’s quite funny and worth a read

[@logr12dragonknight55]

I hope in the future you could do a video where you describe some of the modern versions of the dinosaurs from the TV show dinosaur king

[@dino-gen]

I'll certainly have to look into that show!

[@ellagrant6190]

I'm usually a part of the therapod gang, but I really like the idea of a miniature sauropod. Something like 4 - 6 feet long. Maybe a magyarosaurus with dwarfism or bred to be smaller.

[@BackupAccount-ww9eo]

Good video

[@dino-gen]

Thanks! Glad you enjoyed :)

[@jessehutchings]

Besides size and body density the body plan for bears in general is extremely stable, robust and agile. So, when you pit the short faced bear against similar sized therapod dinosaurs the bear might actually be much more adept at wrestling them, knocking them over and disabling their limbs. Bears are practically built specifically for wrestling and shredding their opponents in the process

[@glennquagmire1747]

A hungry T Rex would've been more then a match had they ever met

[@theo21021]

​@@glennquagmire1747You missed the similar sized part. T-Rex is much much bigger.

[@ilokivi]

Particularly if the T-Rex was one of a mating pair. The one thing which might have made it stop and think about attacking a bear, was the bear’s capacity to inflict serious injury.

[@trvth1s]

@@ilokivi A Trex would have absolutely no fear of a bear inflicting damage. A 10 ton hypercarnivore would EASILY take out a 2 ton omnivore. Hypercarnivores make a living off death, omnivores like arctotherium avoid injury and preferred vegetables

[@trvth1s]

Depends on the theropoda. Some theropoda, like carnotauridae, were built for speed and for catching small prey. Most other theropoda have advantages over bears. Theropoda have several advantages over mammals, this is why mammals lived along side them for 90 million years and they could never, not once, compete. 1. Theropoda have airsacs which are 2.5x more efficient than lungs. So the theropoda has FAR superior stamina. 2. Theropoda are highly muscularized with large muscle attachment sockets. Birds have this today, it makes them very lean and powerful for their size. Theropoda were not small but still very muscularized. A 2 ton theropoda is far more powerful than a 2 ton bear, which would be mostly fat and heavy bone. 3. Theropoda bones are stronger and lighter, superior in every way. This is also a reason why 10lbs birds look far larger than 10lbs mammals. A 2 ton theropoda would dwarf a 2 ton bear in terms of volume.

[@SadRaidersFan44]

Can you do a video on styracasaurus? It’s definitely the coolest looking ceratopsian

[@dino-gen]

I've been considering it, especially since it's my favourite Ceratopsian :)

[@Qingeaton]

I have had a lot of different kinds of animals over the years as pets, and reptiles seem to have the least personality. I had snakes, lizards and turtles and they do have different temperaments, but I never felt like they could learn much of anything.

[@lewisbean4250]

Whhh, the very high estimates for Arctotheroum came from scaling an individual with fractured femur that reheated, resulting in an artificially high estimate, that and scaling from overweight captive bears. Volumetric studies suggest more conservative weights for the fluffy boys

[@PackHunter117]

Archaeopteryx, Eoraptor, certain tiny pterosaurs, Protoceratops could be like a sheep or pig, and maybe that dinosaur from Madagascar that ate fish could work also

[@mudgetheexpendable]

How about psittacosaurus as a pet?

[@laurachapple6795]

I have to agree that mammals are very dense. Some of the densest mammals I know are my co-workers, especially the one guy who thinks aliens built the pyramids.

[@outinthesticks1035]

I am always surprised how people who believe outlandish, absurd theories, can be so practical and technical when it comes to clandestine, hydroponic horticulture

[@glennquagmire1747]

Bigfoot built the pyramids 🤣🤣

[@hyennussquatch4597]

​@@outinthesticks1035😂

[@prototropo]

A ton of bear! Scary.

[@peterburridge9346]

How about hypsilophodon

[@entity_unknown_]

Nice

[@thomasroot620]

I've always wanted a parasaur, I would keep it like one would keep a horse, rather than a dog or a cat or an iguana.

[@uncletiggermclaren7592]

They were actually friendly, gentle giants. Just had bad press. 🤔

[@HammboneBob]

3:28 sounds like what Yellowstone is rn

[@Darian97-w4p]

Thanks for the insight! Do you think this bear would have partaken in as much piscivory as modern grizzlies?

[@AncientWildTV]

it's likely that dinos would be too large and powerful for these bears to take down. but the bears may win smaller and more vulnerable dinos

[@trvth1s]

I think the main issue would be if a dinosaur filled a similar niche or a larger niche. These large bears were not good at climbing trees, if a large theropoda looked at it funny the bear would be doomed. Mammals in the age of dinosaurs could hide underground, this bear could not. This bear was also not good at climbing trees.

[@selakery3297]

Psittacosaurus. Labrador sized herbivore. Actually kinda cute.

[@arlequinesinseparables39]

The T. rex a favorite for a pet, 😊

[@raphlvlogs271]

you should have asked what type of non avian dinosaur would have been the most likely to be domesticated instead

[@shawncharton9416]

I also have seriously concealed junk in my trunk. Jessayin.

[@bartbullock7817]

got to have a T rex,with a rather large shock coller ,you know..should it get out of line. "So..you like Dog fighting do ya"?well...

[@Mr.SharkTooth-zc8rm]

Just discovered your channel! SUBSCRIBED

[@dino-gen]

Thank you! Welcome aboard :D

[@Mr.SharkTooth-zc8rm]

@@dino-gen 🦖

[@maozilla9149]

nice

[@G.I_Jane]

Its Daddy-gen time

[@creatureking-theoriginal1068]

why just why

[@Urduhkhan]

Yall needed better father figures I guess

[@HammboneBob]

Cease

[@G.I_Jane]

@@Urduhkhando you even know how to use that?

[@dino-gen]

I have mixed feelings on this haha glad you set it in your diary though ;)

[@zztop-fj4xk]

They should include short face bear in Jurassic movie

[@mhdfrb9971]

The 1600kg-2000kg estimate is massively overestimated based on it being measured from a specimen that has a pathology that increased the bone diameter/circumference. It's more likely that Arctotherium top at around 800kg.

[@francissemyon7971]

It would be good to have an actual peer reviewed reffutal now.

[@beef_cake6172]

Do you have any source links? This is a genuine question. Whenever I look at articles about this specimen they fail to mention the broken bone detail

[@polishheavies8205]

I feel like you're talking about the Arctodus, North American short faced

[@lewisbean4250]

@@polishheavies8205no, he’s right, the specimen is fractured and rehealed, plus they used captive brown bears for scaling in the paper.

[@polishheavies8205]

@@lewisbean4250 so you meant to say what the experts believed to be the largest bear ever discovered is smaller than the largest polar bear? because that's what he said.

[@stevenbragg85]

Which dino would make a great mount??

[@etinarcadiaego7424]

Ankylosaurs.

[@LouisFryer-q5r]

I think that the dinosaur jakapil wood make a good pet

[@rickeytaylor3001]

Arctodus was over 12ft

[@Dr.Ian-Plect]

Inaccurate and unsubstantiated.

[@rickeytaylor3001]

@Dr.Ian-Plect bullshit if u look at it deep we don't know how big these animals actually got

[@Dr.Ian-Plect]

@@rickeytaylor3001 "bullshit if u look at it deep we don't know how big these animals actually got" - if you don't know, why did you put a figure on it? Who's talking bullshit here?! Well done contradicting and exposing your own made up tripe Muted.

[@rickeytaylor3001]

@Dr.Ian-Plect dude u obviously not getting my point lol

[@CEB_80]

Most tiny theropods…

[@yezothebear]

❤

[@samuelruakere7728]

Mammals do get as big as some dinosaurs such as Ceratopsians, Hadrosaurians, Theropods, and much much more they just never reached sauropod or giant hadrosaur/theropod sizes

[@Polosatiy_Varan]

The largest land predatory mammals are several times smaller than even medium-sized theropods and large crocodylomorphs.

[@StandardGoose]

Bearing in mind the average dinosaur was about the size of a deer, it's fair to say that mammal can get as big as quite a lot of dinosaurs. My cat is as big as some dinosaurs.

[@Polosatiy_Varan]

@@StandardGoose And the average size of mammals is the level of a dog.

[@pierre-samuelroux9364]

Meanwhhile palaeoloxodon going to 20 tons so as much as shant:

[@bandini22221]

But could he whip a T-Rex?

[@efs83dws]

Actually the blue whale is the largest mammal ever and they are still with us.

[@praise_kek340]

a small herbivore that lives in groups could be a good pet

[@etinarcadiaego7424]

I don't know. Today's most common pets are small carnivores (dogs and cats), so I'd say things like compsonathids, small dromeosaurs and the like. Though since dinosaurs weren't likely very social, they'd behave closer to cats.

[@KevinHorlback-il8dj]

A raptor and even a tree eater would kill it also what about a T Rex ‼️

[@pierre-samuelroux9364]

At 2 tons..it could scare allo and cerato,small dinos too prob but big ones?No..

[@rowansumner9088]

A Joe organ classic

[@Kurotitan7125]

This is truly a remarkable beast. But Barinasuchus is superior

[@harsha1989able]

😂

[@saladinbob]

Sure, scare most dinosaurs in its weight class, a T-Rex was 16.5 Tons and that goes up if we consider they think the upper size could be 70% larger than previously thought. That would be like Peter Dinklage intimidating Tyson Fury.

[@Splooje]

An average trex WAS NOT 16.5 tons. Maybe, maybe a couple dozen throughout their entire history. You could just say 7 tonnes, which is an average trex, and still get the same effect. That's like saying the average grizzly bear is 1200 pounds, or the average elephant is 13 tons. Yes is possible, but you will likely never see it

[@Splooje]

I mean seriously, how many shaqs, or Brian shaws, or Robert waldlows have there been? And there have been BILLIONS of us. There probably weren't even a hundred million full grown tyrannosaurs ever

[@etinarcadiaego7424]

Ever seen the shitty ass hortor movie Grizzly?

[@raylopez99]

Mammals weigh more than reptiles. In a simulation by Gojicenter between T. Rex and the largest mastodon, the elephant won. Regarding short-faced bears, as Joe Rogan said, while they were alive they may have been the reason humans did not cross the Bering Straits. Can you imagine these things hunting you?

[@sealboy1211]

Ten humans with sharp rocks attached to sturdy sticks is a death sentence to any bear.

[@raylopez99]

@@sealboy1211 And fire. Cave bears tho... 10 feet high must have been scary.

[@pierre-samuelroux9364]

Mammals weigh more than reptiles so a 2 ton bear larger than sauropod on your logic?

[@raylopez99]

@@pierre-samuelroux9364 Mammals vs reptiles not kg invariance is the issue. Bye.

[@pierre-samuelroux9364]

@@raylopez99 kk thx :)

[@HeWhoMurksWithOneLeap]

What dinosaurs is this 4,000 pound bear supposed to frighten? Compsognathus? 😂

[@StandardGoose]

Most of them, given that the average size for a dinosaur was about the same size as a deer.

[@lucasbrown743]

Most dinosaurs had bowel movements bigger than this bear. 😅😅😅

[@andrewstrongman305]

A 2 ton bear wouldn't be capable of threatening most dinosaurs directly. Their eggs might be a different story, though.