The Rise and Fall of the Bone-Crushing Dogs

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A huge and diverse subfamily of dogs, the bone-crushers patrolled North America for more than thirty million years, before they disappeared in the not-too-distant past. So what happened to the biggest dogs that ever lived?
Produced for PBS Digital Studios.
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References:
Dogs: Their Fossil Relatives and Evolutionary History by Xiaoming Wang & Richard H. Tedford.
The Princeton Field Guide to Prehistoric Mammals by Donald Prothero.
Evolution of Tertiary Mammals in North America, Volume 1: Terrestrial Carnivores, Ungulates, and Ungulatelike Mammals edited by Christine M. Janis.
The Skeleton of the Borophaginae (Carnivora, Canidae): Morphology and Function by Kathleen Munthe.
Vertebrates: Structures and Functions by S.M. Kisia.
www.ncbi.nlm.n...
digitallibrary....
www.ncbi.nlm.n...
www.ncbi.nlm.n...
www.researchga...
www.ncbi.nlm.n...
www.cambridge....
www.naturalhist...

[@TierZoo]

When you spec too far into damage and forget to save any points for adaptability

[@robotrannicthesurprisingly9085]

oh tho if you spec too far into adaptability you'll end up like the water bears

[@victorpalacios9734]

Both awesome channels

[@manictiger]

Endurance is OP, pls nerf!

[@Megraptor]

I feel like stealth plays a huge role in this too though...

[@Andreych95]

You didnt post on saturday. I miss you :c

[@gnualmafuerte]

And eventually developed the most amazing adaptation ever: Convince humans to go to the supermarket for them. That's the real top of the foodchain.

[@riddickmarkus69]

Dogs have become the New Master Race or maybe Cats?

[@brooklyna007]

@@riddickmarkus69 Cats don't even need to be taken on walks and rarely need your attention. They are the master race.

[@cripplinganxiety1941]

They could be better it wouldn't have gone any better

[@Burn_Angel]

@@brooklyna007 Cats aren't as social nor as intelligent as dogs, as well as being less of companions and more of serial killers, which makes dogs the better choice, being tame but without really losing their primal instincts.

[@krisius1]

They may not have the most horsepower in their heads, but dogs are the smartest animals in the world for one reason: they’ve teamed up with the apex animal. They are (for the most part) not considered food by us, and live in our homes as a family member. Chimps and dolphins won’t be going to the stars with us, but dogs will.

[@marcjtdc]

"Oh, She's a a rescue".... "awe what kind is she?".... "we think a mix of bone crusher and wolf. she'll get to about 350 pounds"

[@cryptidliam8452]

Yeah he’s just a puppy he’s so adorable HES CALLED *BONE CRUSHER* yeah if you say his name he’s get on his hind legs and then role around on the floor, he’s adorable

[@tharealmikezee3165]

Sounds like the Boerbull!! South African mastiff. They are in fact part wolf. And they've been known to eat babies...at times

[@pennygleeson5029]

My favourite ❤️❤️🤣🤣

[@edgytween7667]

From crushing bones to barking at doors. How the mighty have fallen.

[@actsrv9]

It's the same with humans. We used to hunt prey by chasing them for miles in small groups. Now we just sit and watch TV stuffing twinkies and beer into our pieholes.

[@ekanshgupta2421]

@@actsrv9 but if the need comes we can create havoc with all the nukes and guns we have...much more than our ancestors

[@jayjayswash2729]

Cats got it the worst they were literally seen as gods in ancient Egypt. Now they stand by there bowl side giving you the sad puppy dog eyes waiting for there next meal. Talk about how the mighty has fallen lmao. They went from gods to a feline Oliver twist.

[@asolute504]

That could be said for nearly all animals

[@mwamwamilky3485]

@@ekanshgupta2421 physically though we are much inferior to what we used to be

[@ToMinecraftAdventure]

Thats why dogs bury their bones. In memory of their dead ancestors who had fallen to the cat hordes during the great war.

[@ijusterik5384]

Lol

[@Lindwyrm6429]

NUUUUU rip big doggos.... They can't crack them, so they're sending them back to the dogs that could.

[@afifbrian2540]

they're canidae, therefore they're dog

[@johncolasont6195]

To soon.

[@Lindwyrm6429]

Actually, they're closer related to wolfs, foxes, and other modern day doggos than to bears, otters, seals, etc. Where's your logic here? They were even in the same family, and might have had a similar bone structure.

[@arturoperezify]

From bone crushing to heart melting.

[@crusaderofthelowlands3750]

Nah, they play the long game now. The get all up in your face and make you love them and then they die. So they went from bone crushing to heart crushing.

[@brodermanya]

😂😂😂

[@backpackpepelon3867]

@@crusaderofthelowlands3750 😂

[@bruhlol5786]

Heimskr's Wisdom , y-you okay bud ?

[@zain1132]

They are still very dangerous animals

[@browndd]

My dog is not allowed to watch this video. Whenever she sees an animal on the TV she tries to attack it. And then proudly struts over to me like she just protected the house when it disappears.

[@kduck789]

It’s like a parent not allowing their child to watch ****

[@denisem.1107]

I love your dog

[@taxangmapalo-ines7443]

Awww so cute 😍😍😍

[@ReySchultz121]

Me: draws realistic cat on a man's face Your dog: it's bin laden take him down!

[@TA-oo2rd]

Do you give her a treat after?

[@Jarod-vg9wq]

I’m more interested in that deer from hell in the thumbnail

[@MaureenLycaon]

It was Synthetoceras, from the protoceratid family. Protoceratids in general were weird-looking beasties.

[@LadyEowyn]

@@MaureenLycaon thank you. I was ignorant too.

[@duckbuster6391]

What about the horse that spits acid 5:47

[@erikperhs_]

@@duckbuster6391 ummm... Have you heard of llamas?

[@juanjoyaborja.3054]

@@duckbuster6391 That’s a llama, an odd-toed ungulate. It’s more closely related to dolphins than to horses.

[@Onneukbaar]

Dogs millions of years ago: BONE CRUSHERS Dogs now: scared of firecrackers

[@spindash64]

Follower of Saints Dogs now are also bffs with the T-800, so, make what you will of that

[@pitcantread2268]

Like the video mentioned, dogs have great hearing. Their ears are sensitive. Anything loud is painful to their ears. Just like when someone screams in your ear, it's loud, and it hurts. :/

[@oscarevarist2494]

Not my dog.

[@waxwinged_hound]

To be fair, a bone-crushing dog would also probably be afraid of firecrackers.

[@scouse1m747]

You would know the real feelin of scared if you firecracked my dogs

[@Niom_Music]

My question is: What’re those antelopes with nose antlers?

[@djamelben9221]

synthetoceras

[@Niom_Music]

Arcus 🤨

[@Melicioel7]

prongy bois

[@rohithvishwajith4988]

Synthetoceras

[@Zero21kr]

Rhinontelope

[@Nikki0417]

I should really be sleeping, but on the bright side, at least this is a super educational waste of time.

[@aglassofmilk5779]

Nikki Berry lmao same

[@johncampbell5669]

maybe you should try playing with yourself...

[@maxw5750]

There’s no such thing as wasting time when you’re acquiring knowledge.

[@Burn_Angel]

"There is no knowledge that is not power" -Mortal Kombat.

[@christmondejesus2790]

As if id even remember this tommorow 😂

[@Antalaxy]

Long ago, the three nations lived together in harmony. Then everything changed when the *Cat* Nation attacked.

[@issagahan6693]

Cats rule

[@wolfblade9530]

Cats barely did anything to their extinction. It was a mix of catastrophies like change of climate, competition with other bone chrushers, Canines (yes, the dogs we have today is one of the reasons they are dead) and more! Canines evolved to use stamina than brute power or bulk. If you think about it, their extinction is like Megalodon's, change of climate, new species, and competition. Stop thinking cats are the reason they are extinct because cats barely did anything.

[@wolfblade9530]

This was inspired by Some body.

[@taiyo9421]

@@wolfblade9530 they also compete with cats, so they didn't really did barely anything

[@wolfblade9530]

@@taiyo9421 Epicyon competed with a-lot of animals like Canines, Bond Crushers, and cats.

[@MannyFresh1x]

Ahhh the legendary doggo. Extinction by cat.. The rivalry stretches far into the past.

[@prehistoriccreature1800]

@Roger Martin No rivalry indeed... You idiot... Dogs rule cats drool

[@noahschroeder8900]

@@prehistoriccreature1800 then why did cats kill off the biggest dog apex predator? 😂

[@patricofritz4094]

@@noahschroeder8900 Cats were meant to be smaller than dogs the same size as dogs and bigger than dogs

[@dull_demon4717]

@@prehistoriccreature1800 uh huh, sure.

[@TheSapphireLeo]

@@patricofritz4094 Say that to the sabretooth?

[@raiknightshade3442]

Ah yes, the canids made it to Africa and early humans bonded with them like "oh, you play the long-game exhaustion hunting technique? Us too! We should go hunting together!"

[@derekscanlan4641]

no coincidence that the other human species without dogs all went extinct. We have a lot to thank the mutts for

[@LimeyLassen]

Destiny, no other word for it.

[@wayne7055]

Joshua Bartlett there was supposedly an ice age at the time, so the equator (which happens to pass through Africa) wasn’t nearly as hot as it is now, so even Northern Africa could have been temperate.

[@Dragrath1]

If memory serves the oldest extant dog breeds genetically can be traced back to Siberia note however that dogs were not domesticated just once but several times same with other animals such as cats and camels of the top of my head. They were also domesticated in Europe but those dogs left no living descendants eventually being replaced by their Asian kin.

[@guysmiley3084]

@@joshuabartlett5575 Aah, you're right! 😉 😉 👍 👍

[@KarlBunker]

Bone-Crushing Dogs? That's my dog when I'm lying in bed and he steps on my chest.

[@the_bohemian4536]

KarlBunker F

[@firegator6853]

😂

[@DefinitelyNotAnAlien]

🤣

[@sebo9872]

That’s my dog when I’m lying in bed and he steps on my morning wood

[@Stevepoku]

@@sebo9872 bruh lll

[@teashoplee603]

I love how information-dense this is. Feels like so much longer than 10 minutes… so fascinating

[@joshreyes00]

That makes sense why dogs and cats dislike each other

[@stephenrodenbough2186]

Josh Reyes Cats are plotting to take over the world. Dogs are trying to warn us about the cats.

[@eamonflaherty5325]

Oh grow up

[@feckbreadempty9226]

Eamon Flaherty learn to take a joke

[@lisaschuster9305]

It doesn't. Cats and Caninae got along well - cats just eliminated the bone-crushers, who very likely also meant competition and peril for the Caninae.

[@barneybeartilde9601]

Lisa Schuster my dog really doesn’t like cats

[@thegdpwhytea439]

homework: nawwww bone crushing dogs: yeeeeeeeeeaaaaa boi

[@aglassofmilk5779]

The GDPWhyTea? This is too funny lmao

[@marca6597]

This needs more likes.

[@mriarosete4601]

Why is your profile picture a car making love with another car?

[@thegdpwhytea439]

@@mriarosete4601 Why isnt yours?

[@IanCrossland]

Now you're learning.

[@erikjarandson5458]

My cat watched this with me. He's still rolling on the floor, purring out loud.

[@zimrianispresent8123]

Evidence

[@The_Observant_Eye]

"what are you looking at, hooman? I'm innocent!"

[@robwalsh9843]

Think about it. First cats outmatch dogs in many environments as top predators, then they manage to enslave humanity while doing nothing for humans except causing allergies and scratching furniture. Those purring little bastards own us!

[@MaryAnnNytowl]

@@robwalsh9843 and I wouldn't have it any other way! 😄🐈🐱

[@kennethsatria6607]

@@robwalsh9843 Mothlight studios makes a good point on that though, in the wild the big cats are going endangered and no cat has ever topped a dog in running stamina which is why both are still evenly matched in their respective lands

[@cameronb7161]

Dogs millions of years ago: *can crush bones* My dog millions of years later: *can barely jump onto my couch*

[@stickboianimations2273]

lol

[@jacobhoover1654]

You try to jump straight up onto a couch as tall as you

[@UncleKazzy]

@@jacobhoover1654 my dog will look at me, cry, then as soon as I go to help her she'll jump up just perfectly fine and lay down like she didn't do anything 😂

[@Threepeater6447]

Other dog:we go to war

[@killerpro6982]

My relatives have a rottweiler who chews on mutton bones like they are sticks

[@1SpicyMeataball]

Cat on my pillow: "I'm here to beg for treats, and destroy bone-crushing dogs. *And I'm all out of dogs"*

[@MaryAnnNytowl]

This should have had a LOT more likes. Seriously.

[@shiawasekappukekiful]

Dontcha mean "demand treats" from their giant bipedal slaves

[@rhaenyratargaryen1stofhern55]

😂😂the most adorable terror.

[@robwalsh9843]

Modern non-bone crushing dogs: We don't forget our brothers, so don't you forget about us.

[@tommatt2ski]

@@robwalsh9843 african lion : " Looks like dog meat is back on the table, boys"!!!

[@nothisispatrick4644]

"The Bone crushing dogs" sounds like an amazing band name

[@chaosmarklar]

Metal band or wrestling tag team, here comes the bone crushing dogs!!

[@Zulu-Lemon]

Saber tooth tigers vs American lions vs bone crushing dogs Greatest Gang war in history!!!

[@Meteo_sauce]

Wait till the level 100 bosses, that 200 man herd of mammoths show up and stop the party

[@spindash64]

GODᴇᴘɪᴄᴇʟʟ真神 Humans: Hold my Spear

[@highvolt_lando7360]

@@spindash64 LOL

[@7uhz232]

Liger

[@quizels0695]

imagine they teamed up

[@thegodlesspagan8868]

“They don’t look like the dogs we know today”, while I stare at my pit bulls....

[@kateajurors8640]

Write that picture looks like it was made from a pit bull. Like a super sized one but still that is so a pitbull LOL I know it's just an artistic rendition but

[@chasquinto]

I looks like a mix pitbull and dogo argentino

[@mariobastidas3102]

Imagine an agile 400 pound pitbull! That one picture reminds me of my 65pound pittie!

[@just_bj_yt5357]

Same

[@Tink6217]

I have a long legged Staffy and I love her

[@MetalHermit83]

How terrifying, a 375 lb pitbull.

[@JAMDUWHAT]

Narancia Ghirga looks more like a Pitbull

[@namesomega3694]

More like a prehistoric hyena

[@RowdyDandy]

@Narancia Ghirga That honestly doesnt make its description less scary one bit 😅

[@joe_hoeller_chicago]

Actually Pits are big babies. Not very scary tbh.

[@imformal6101]

Name's OMEGA hyena belong to a different genus falling under the Feliforms. That’s like comparing the actual a dog to a cat

[@hannahmontoya2355]

Dogs: massive, bone crushing, aggressive Cats: agile, sharp claws, stealthy Me: oh my gosh look at the ancient puppies and kitties!!!

[@djprincegrandmasteryrjdalo2905]

Yo Hannah you Latina

[@LetsGoGetThem]

Men: massive, bone crushing, aggressive Women: agile, sharp claws, stealthy oh no

[@prestonang8216]

Omg cat drugs so true

[@yjk5737]

Epicyon vs. Smilodon

[@ethanrivera-728]

Cats : offence Dogs defence

[@andrewrichens5733]

What kind of animal is that thing with epicyon?

[@eons]

You asked first, so I'll answer here. It's Synthetoceras, an artiodactyl that lived in North America during the Miocene. Think we should do an episode about it and the other protoceratids? (BdeP)

[@willherondale6367]

@@eons Yess! The large and bizarre eocene mammals are fascinating

[@nickopeters]

It's either Prosynthetoceras www.deviantart.com/ardynictis/art/Prosynthetoceras-francis-761034849 , Synthetoceras, or one of the early ancestors of Jar-Jar Binks.

[@cs2d20]

PBS Eons YES PLEASE i love everything that revolves around paleontology and archaeology (I’m hoping I’ll become one of the two when I get older)

[@andrewrichens5733]

PBS Eons that would be awesome if you did an episode on it!

[@markstedman8186]

This got me thinking about cheetahs, I wonder if they have gone down a evolutionary dead end just relying on speed which can only be kept up for short bursts and the fact that they rarely hold on to their kills due to lack of strength. Their existence seems precarious which is a shame cos I love them

[@jrmckim]

Did you know cheetahs arent true big cats... it blew my mind at first

[@teathesilkwing7616]

@@jrmckim no they are

[@nesyboi9421]

@@teathesilkwing7616 Did you know that cheetahd meow like housecats?

[@AspireGMD]

@@teathesilkwing7616 They aren't, they can't roar. Big cats can roar, while "little" cats purr.

[@teathesilkwing7616]

@@AspireGMD it depends on the definition

[@smokesparkdragonfly1368]

"They all eat meat" -Looks over to the doberman eating his 5th pair of shoes-

[@robinchesterfield42]

And my cat just freaked the hell out over a fall leaf I tracked in on my shoe. Went BONKERS leaping in the air trying to eat it. Obligate carnivore my foot. :P

[@jcortese3300]

Were the shoes leather? :-)

[@martijnvanweele6204]

Well, if the shoes are made of leather...

[@PeterGriffin11]

Doberman eating his what???

[@no3mun0z]

@@PeterGriffin11 shoes maybe

[@Brutaltronics]

who's bone crushing doggo?? who's a monstrous killing machine??

[@rafaelalodio5116]

I would like to have a bone crushing dog, at least no one would rob my house.

[@goochipoochie]

I guess, Tibetan Mastiff

[@katiobrien7854]

And who's a good humongous doggie?? 🐶 LOL

[@FBFTheRagingWarrior]

@@goochipoochie Nah TM is okay but the real bone crusher is Turkish Kangal with 750psi strongest dog bite twice as strong as the seccond strongest of the mastif breeds.

[@FBFTheRagingWarrior]

@@goochipoochie kzbin.info/www/bejne/h4OulKVmYrZ-frM

[@Alia-bc3rc]

Forget about the damn dogs! *Tell me more about that horned deer-velociraptor-creature instead!!*

[@bkjeong4302]

Alia Ris Synthetoceras, a pronghorn relative.

[@ArkBagas]

Rowdy Jr. it's kinda more related to Camel & Giraffe rather than an actual antelope.

[@amandagoodman1877]

How is it velociraptor

[@edwinreveron870]

@@ArkBagas -You mean camels, llamas and alpacas, since giraffes evolve from antelopes...

[@cyberspinosaur1145]

This channel was randomly suggested in me home page, the video was about mammoths. I'm now hooked, I absolutely adore learning about prehistoric animals, and I've genuinely not heard of any in this video. Shows how much I have to learn, and I can't wait. Thank you for your passion and hard work in making these videos and extinct creatures known to us

[@keshav_singh2154]

Could you please do a video on the dire wolf

[@eons]

Stay tuned, we're working on exactly that! (BdeP)

[@becauseimafan]

@@eons Sweet! Looking forward to getting that notification! 😁

[@thedude6762]

@@eons Sick

[@BirdFungus]

keshav_singh 21, hey fellow prehistoric animal loving Indian

[@jakenaylor9138]

PBS Eons - and bear-dogs please.

[@victorpapaavp]

As I sit here looking over my shoulder at my 85 lb pibbull and his cat buddy, I can only think to myself "It's my cat, Charlie's fault, that I don't have a 400+ lb Bone Crusher laying on the bed at the moment..." Great video! Absolutely loved this one!

[@OfAllThingzFooty]

Get yourself a bear, basically the same thing.

[@deadazzz]

victorpapaavp ew. Your one of those weird furparents that has an American Bully he thinks is an APBT that or your dog is obese. Read the breed standard lol your dog is over the desired APBT weight.

[@pitbully714]

Dam might want to see what else your pitbull is crossed with real pitbulls dont get that big unless hes overweight but most of the time not saying you because I don't know but people most of the time miss calculate the true weight. I have had game working real pitbulls for 26 years and one of my best dogs a legend people still talk about him and he was 34lb all jaw

[@planetpeterson2824]

Sorry to nit-pick, but that painting of epicyon with its floppy ears is terrible. Floppy ears are useless for an animal trying to survive in the wild. Floppy ears are one of the traits linked with domestication; see Dmitry Belyayev and his famous domestic fox study.

[@GlenHunt]

And domestication seems to have made them stupendously successful, bending us to their will with their floppy ears.

[@SurrealKangaroo]

It makes it look like a giant pit bull.

[@derekscanlan4641]

neotony

[@TheWoollyFrog]

That's the thing about people. They tend to be unable to imagine certain things so they just resort to what is already familiar. In this case, since the artist didn't have all the information, inspiration was taken from modern dogs.

[@DavidSaintloth]

True but if you are going to present a rigorous time line for the emergence of species you should like wise be rigorous in any representation of those species you present I would say. It's pretty well known that floppy ears are a hallmark of domesticated animals ...not just dogs in fact, it is further not a trait that would be selective in an environment where humans don't exist and the efficiency of hearing is reduced due to ear flop (yes...it is). So it doesn't make sense in any direction as a trait to be shown in renditions of a canine species that lived millions of years before homonins separated from the LCA with chimps.

[@haileygoss914]

If the host feels silly, worry not! You got a laugh out of me. The cheesy jokes definitely add to the entertainment value. Thanks Eons & hosts! I appreciate your work!

[@Marzapan92]

I just wanna BOOP! I love when people narrate well.

[@diamondevans321]

@NEGUS MBARKA boop?! (Souldja boy's "drake" reference)

[@C.O._Jones]

Thank you, kitties, for saving us from the bone-crushing dogs, and leaving us the cute ones for tummy rubs.

[@SquareMahogany]

They protecc They attacc But most importantly They aint coming bacc

[@kathrynyaksich7588]

This comment made me sad

[@teatime4397]

Katy I like birdz at least they won’t come after you

[@Franky_-yi8nt]

I wish I could have a nice bonecrusher as a pet

[@leohernandez2245]

Bruh 🤣😂

[@BasedTitanG]

This comment is gold. Made my day lmao

[@shrimpisdelicious]

So, dogs adapted to a strategy of running prey down long distances, did they? Sounds familiar...

[@anilpratap6952]

Yes. Perfect match because it started with a rivalry. Packs of dogs and packs of humans hunting same species of prey with similar strategy. At some point they realized it would benefit both if they hunted together instead. ;)

[@paryudisaditya8845]

@@anilpratap6952 this really sounds like a romance story. And i love it

[@DaviSilva-oc7iv]

@@anilpratap6952 this awes me

[@dull_demon4717]

Idk what you mean, but i thought pf cheetahs

[@DaviSilva-oc7iv]

@@dull_demon4717 we humans had a similar strategy, we are not the best runners, but we are certainly great at enduring long distances, I don't need to say the rest.

[@seannotconnery8191]

I love paleontology because we can see an entire evolutionary arms race spread out over millions of years. It’s brilliant!

[@yoo7289]

Plz do a video about prehistoric bears and bear evolution

[@29jgirl92]

I second that, that would be really interesting!

[@USSAnimeNCC-]

In soviet Russia bear hunt you

[@yoo7289]

@Hans Meiser Well yeah you can see the resemblence

[@misstrKevin]

Bear-a-lution 🤔

[@Tyro_]

The Andrej Epic yes!

[@ceri1532]

Some Canidae still have retractable claws! Grey foxes have semi-retractable claws to help them climb trees.

[@andrewgan557]

Not to forget raccoon dogs

[@crusaderofthelowlands3750]

@@andrewgan557 You mean portable rabies containers?

[@intheforest7482]

Ralph Vermolen He means another species of dog called the raccoon dog or tanuki from Japan. They’re super cute!

[@crusaderofthelowlands3750]

​@@intheforest7482 I know what a raccoon dog is. They carry rabies and people like you are the ones who get it, because you want to feed them since "they're super cute".

[@intheforest7482]

Ralph Vermolen Lol You have no idea what kind of person I am. I would never bother a wild animal just cause they’re cute (or for any other reason). You could have made your point without assuming I’m a dumbass.

[@neonghost7333]

This video has been in my recommended for months and now I’m finally watching it.

[@flamingrainbws4800]

I don't care what you say dogs and cats ore at the top of the food chain they get humans to do their bidding without question

[@uchennabs]

FLAMING RAINBØWS not all

[@hata6290]

Uchenna KZbin factual

[@sunnishae5047]

They so cute,, I don't mind it.

[@flamingrainbws4800]

@@sunnishae5047 me neither i love cats

[@bringerebrethil6176]

I think there is a difference between a social chain to a food chain.

[@mstalcup]

I notice that some modern breeds, e.g. Staffordshire Bull Terrier, more closely resemble Borophagus on the surface than they resemble grey wolves.

[@drmoreno98]

Wow. Congrats. You are capable of making baseless comparisons.

[@jamiebrown1991]

Close resemblance means absolutely nothing genetically.

[@winter2716]

@@drmoreno98 I bet you’re fun at parties.

[@winter2716]

@@jamiebrown1991 Pretty sure the original commenter knows that, hence why they emphasized “on the surface.”

[@PsychadelicoDuck]

You have to keep in mind that these are all artist's reconstructions, so it might just be the artist was thinking of their pitbull as they drew it.

[@sydthegoat88]

who in their right mind could scroll past a title like this one ?

[@aurimo_]

Well not me for sure

[@nietbekend2]

Defo, i actually learned something today

[@HostileLemons]

I actually avoided this vid for months. I finally gave in today

[@Tsotha]

it's amazing how many different animal families there have been which each used to rule an entire ecosystem but most people have never heard of

[@jolo88671]

After school started, it's felt like eons since the last video

[@G0die16]

Agree

[@thegreatwalrus6574]

School hasn’t begun, at least in Ontario.

[@jolo88671]

how long till yours starts?

[@freedomfighter2463]

@@thegreatwalrus6574 Enjoy it while you can

[@deathclaw817]

Boo bad pun( dislikes this cuz I liked this pun don't take any offense from it)

[@Lord.Kiltridge]

I am especially appreciative of the writers of this series willingness to say that something is an unknown or a theory. One of the greatest mistakes I encounter is when experts present something that is thought to have occurred as a hard fact. This is a vital difference between evolutionary theory and theology. Scientific theory is a fact that incorporates guesses. Theologists posit that scientific theory is ALL theory, i.e. NOT fact, and that theology presents as fact. This, in my view, is the difference between education and dogma.

[@matheuskelson]

👏👏👏

[@jamesbonomy42]

Bears are dogs.

[@dondragmer2412]

@@jamesbonomy42 No. They're ursids and dogs are canids. Different families.

[@whenthedustfallsaway]

@The Iron-hearted Wolf Your'e nearly right. Theories are generalizations made *based* on available data and hypothesis are ideas that are testable

[@CybershamanX]

(3:21) I know the canines are cool, but... WHAT IN THE HOLY HECK IS _THAT_ THING WITH THE BIG TWIN PRONGED HORN COMING OUT OF ITS FACE?!?! :P Man, there have been some _really_ weird creatures roaming the planet from time to time. ;)

[@robinchesterfield42]

I KNOW!! :D That kind of thing is _exactly_ why I love the prehistoric mammals so much--for all the weird designs that we don't have around at all anymore! In that case, the unicorn-deer-thing is probably a Synthetoceras. It's one of my favourites too. :)

[@rainthunder7547]

Kinda looks like the modern day pronghorn antelope idk.

[@JTSquirrel]

It’s Synthetoceras tricornatus

[@alexandru1016]

And now we have humans

[@xSpiralHorn]

Rain thunder Same group, Pronghorns are the only surviving species.

[@skylerwarren3497]

I wish I had teachers like this when I was in school, I can tell y’all are actually interested in the content you post.

[@1BaconDoggo1]

They protecc They attacc But most importantly, They eat bones for a snacc Edit: thanks for all the likes!

[@jupiter1390]

That rhymes.

[@dylanshotwell9100]

Foalan sounds so familiar

[@ksoundkaiju9256]

Dogs still do that...

[@peanutbuttersquid6124]

ICONIC

[@noeldoesgames4121]

YES

[@Leftatalbuquerque]

We are the only species on the planet that makes online educational presentations while clothed.

[@Brandyalla]

I don't understand this comment

[@azzystillborne9125]

It depends on ur definition of educational but we also make some presentation while NOT clothed ;)

[@freshouthebox2298]

@@XtremeNeed Explain...

[@DoctorWortspieler]

...I don't think there's much competition for that distinction.

[@freshouthebox2298]

@@XtremeNeed yea I got that but I just thought there might be something I was missing

[@hotpinkpiggy12]

This channel is seriously so dope

[@d.t.w1390]

-nerd- Dope

[@zacharywalters6026]

The title of this video sounds like an album title for a post-rock band. But real talk, I freaking love this channel. Always learn a lot and its always presented in an entertaining way.

[@yecly]

Both of my dog and cat are well with each other. The older and mature, dog are smarter and take care of everything. Cat are more of hidden wisdom and territorial. Only show affection to me and familiar faces. I love them both, and thank them everyday for taking care of our home and family. *They are better than my human acquaintances.*

[@KhanhNguyen-mh5ec]

Athousand Light Glad you can find what you can trust.

[@michaelrojas8658]

My German Shepard and cat used to sleep together. They are both gone now RIP.

[@janestaton5626]

I love both cats 😺🐈 and dogs🐶🐕 too! 💖💖

[@spice4777]

Michael Rojas did they leave behind a German cat for memories! 😂🤣😂🤣 sorry couldn’t help myself. Advanced apologies if I offended.

[@favianmunoz8222]

Sucks I was born too late to explore the world and sucks I was born too early to explore the universe but at least I was born in time to see stuff like this🎭

[@deviljho4260]

You can still explore space and the world though?

[@KA-ug4yd]

My biology professor always says that we are infants in the world of science. The guy who discovered DNA is still alive. There is so much we still don't know about the Earth. Most of the information from this video comes from so many different people researching particular information about these bone- crushing dogs. Once they know a lot we get videos like this that explain all the individual research that went into learning about them. It's never too late to explore 😄

[@skullsoftruthknowledgeispo8908]

you still may have time to see the universe we are amongst you

[@kari7403]

Ah, but being born now, you can explore the internet!

[@skullsoftruthknowledgeispo8908]

@@kari7403 boooooo

[@JoshuaHillerup]

Why do so many of the pictures make them look like various domestic breeds of dogs?

[@artonline01]

Joshua Hillerup yeah one looks a lot like a pit bull or mastiff

[@animalobsessed1]

Because artists are often not scientists.

[@xxXthekevXxx]

Artistic liberty. Not scientific art.

[@Lindwyrm6429]

1) It's paleo art. If your a paleo artist, it's kinda your job to know what they animal looks like. And they aren't just your usual painter. 2) Scientist is a very broad term. It's everything from studying insects, to studying space.

[@ruecumbers]

Another thing to consider is that with their hunting style and powerful jaws, they probably did have shorter, broader snouts and heads, making them more akin visually to mastiff breeds than wolves.

[@lordnazzer]

now dogs: sandals chewer cats: box hermit

[@dull_demon4717]

One is more independent then the other

[@mitab1]

@@dull_demon4717 we just throw cats in our houses to deal with rats so yeah one is your pet the other is your roommate (who doesn't pay rent)

[@junkerburn2341]

@@mitab1 and not only do they not pay rent, they sit on our computers when were doing something important or sit in our laps when we need to get up. Oh, and they expect us to clean up their crap. But they are cute....so i *guess* ill let it slide...

[@mitab1]

@@junkerburn2341 fun fact they sit on you keybaord becuse they Either wanna copy what you're doing or the they think you need to rest and they don't Expect you to clean their crap they Bury their crap in the sand but you made it your problem by placing it in your house

[@junkerburn2341]

@@mitab1 true true, i knew all that. I kid, i kid, lol.

[@jacobgillispie1175]

I suggested this forever ago! I’m so glad you guys are covering them!

[@failed_K]

Cat and dog War is still waging on

[@rrrr-im9oz]

BryanIsSalty because ppl are dumb af

[@ScionStorm1]

2D Pizza 'Man's best friend' does not have a sandpaper tongue.

[@joyconbulb3743]

Weird I can't remember the last time my cat has killed someone....Mean while "Mans best friend" kills around Around 30 to 40 people each year from their injuries, and an estimated 100,000 are injured badly enough to require plastic surgery.

[@JavaIsnom]

@@joyconbulb3743 that's because cats go after smaller prey. The reason that smaller cats were the kind that humans domesticated was probably just because they wouldn't be able to kill you as easily early on in domestication. (excluding lions [which use pack hunting, like wolves] and jaguars [which are incredibly strong skull crushing cats])

[@JurassicReptile]

I mean the Sabertooth Cats did die off from long distance runners like wolves so i guess they got payback.

[@lousecrest4064]

It always makes me so happy to see a new PBS eons video was uploaded, thanks for the great content!

[@parasyteghoul_]

While I was watching this my dog farted so loud it scared her awake and I’m here like... I can’t believe you had such ferocious ancestors you lil wuss.

[@riks081]

Dog: right back at ya

[@mickles1975]

Damn cats. I knew they couldn't be trusted.

[@soybasedjeremy3653]

@@ArawnOfAnnwn Lame...

[@greensteve9307]

CATS RULE, DOGS DROOL!

[@commentingaccount1383]

I know my cats would eat me if they were big enough, but that's just a plus imo

[@hellstarremina7605]

Why?

[@williams11372]

@@commentingaccount1383 haha dont rest easy brah they will still eat you now at the size they are!!! Dont forget to feed your cats!!!

[@dryzabonesatom1945]

Dogs a few million years ago : were better than you Cats: deletes 2 species of dog Dogs : I regret

[@MaryAnnNytowl]

LOL, not just two species. Two entire genuses, in fact. 😄

[@Noname-67]

If a species is better, they die faster

[@d2marquezjapson788]

Big cat are scared of epicyon haydeni but they stole epicyon haydeni prey just like hyena stoling prey from lion

[@shruggzdastr8-facedclown]

Just imagine, for a moment, an Internet dominated not by cats but by bone-crushing dogs instead!

[@kpp28]

Blasphemy! Cats will always reign superior!

[@davidbarnett342]

It be a better place.

[@nietbekend2]

Heaven is real :')

[@Ezpazmic]

That's a world I want to live in!

[@Im-Not-a-Dog]

I imagine if bone crushing dogs were still around, house cats would be like a snack for them. In the same type of way that you feed a large snake a rabbit or a chicken, ya know? Sure it’s technically a pet type creature, but to your pet it’s also edible.

[@nate7790]

When they say that the ancestral dogs had fully-retractable claws like cats, I thought there may be more to the story. Something like them branching off from a common ancestor. Kind of like siblings who didn't like each other and divided the world between them until cats decided to take over the dog territories...

[@Spearca]

They did have a common ancestor, the miacids mentioned at 1:16.

[@AHSears]

I only found this channel a couple days ago, but I absolutely love it. So fascinating.

[@ellyjett]

I always heartily enjoy watching Eons, but I’ll sing praises to my cat who caught a Nola rat. Every pup I’ve had were only good at hunting down belly rubs.

[@s.tavares3257]

Cats are the better hunters than dogs. It’s no competition.

[@musiciseverything120]

Every. Single. Video from this channel is so friggin incredible. The quality of these videos ALWAYS blows me away. I never get done watching anyone else and feel the same way as eons makes me feel. Like I feel awe at the incredibleness of the world and so curious about so many new things and joyful that we know so much but that there is still so much to know! And then on top of that I'm giggling over the nerdy dumb jokes! Each video captures my attention and holds it. It's amazing.

[@sarahmcmorn8475]

I love this series. Gets me through my workouts!

[@ThanatorRider]

2:03 *PBS:* Hesperocyoninae *Me:* L O N G D O G

[@briannasnelgro8940]

I laughed way to hard and long at this

[@joeys4289]

Great video as always, you guys are close to half a million subs and you deserve every single one. #PBSEONSISLOVE

[@thewalrusclown]

OMG PBS Eons did the animal I suggested WOHOOOOO!!!!!!!!

[@TheSunlitLeaf]

Thanks for suggesting it! I knew nothing about these dogs. It's really interesting!

[@DexwardCuxann]

And here I thought the animal you suggested is the walrus clown.

[@stegotyranno4206]

For all of those saying that cats brought their extinction, it was a mix of factors such as climate change, competition within other bone crushers, the biotic interchange of North America, Asia, And South America. And they were also already dwindling as their descendants, modern canines switched for a more powered(and adaptive) chase hunting style rather than specialized power and bulk, which was more successful. Cats just barely did anything, as they were just another group of animals with Similar hunting styles. And these cats were not related to your cats that you have right now.

[@gagarontol9843]

cat still cat, because every cat species have catitude, hahaha

[@leonidashitler4972]

@@gagarontol9843 yeah trash attitude

[@TranShar]

The moment 2:14 hit I was like, he's a dog person.

[@torikol1045]

6:47 Yep, definitely a dog person.

[@MihneaKiller]

This channel is the best thing that happened to KZbin

[@qyza3690]

Ah yes my favorite Bowie album The Rise and Fall of the Bone-Crushing Dogs

[@epic9648]

(. .) ___}

[@MaryAnnNytowl]

Bowie? Maybe Pantera, or Cannibal Corpse. Bowie, not so much. 😄

[@hiimjustin8826]

David Bowie never had an album titled that, I think you're confused. I would know I'm really familiar with his work. That was David Bow-wowie

[@manuelarmenta5972]

Thanks a ton for sharing your findings trough your dedication,great work!

[@tigerfanfrv]

Would the “bone crushers” have had floppy ears? Or is that an artistic choice? It is my understanding that that trait was selectively bred in domestic dogs and not normally seen in wild populations.

[@LimeyLassen]

It's neoteny. Dogs bred for friendly personalities develop puppy-shaped bodies as a side effect.

[@COVID-19_Crab]

The ears were held back, not floppy

[@mantis_toboggan_md]

@@COVID-19_Crab You right. Such as a pit bull.

[@josemota2957]

Canines grew the brain and are smarter. They befriended the human and thus took over the world along humans. They hunted bigger prey with the help of trust side kick the spear chucking human.

[@cryhavoc9748]

@Jose Mota - My dog has learned when the automatic water bowl or food bowl is empty, to take her paws and " dig furiously." A human will then come and correct the lapse in service.

[@spindash64]

Cry Havoc I had a dog that learned how to play reverse fetch. She’d put her ball under the couch or drop it down the stairs, then whine till someone got it

[@dmlp103]

Cats did that. While dogs were stolen as pups and breast fed from humans and bred until now they cant breath and their eyes pop out. Cats came to us and were accepted and revered. We have completely different methods of domestication. Intelligence is based on ability to obey commands, and ability to solve a puzzle to get a treat. Both animals can do so and do it well when properly trained.

[@spindash64]

dmlp103 Your information is very out of date

[@irishgrl]

spindash64 I beg to differ. Cats can problem solve in a way dogs never have. Cats can run faster, jump higher, have sharper claws and teeth, and are more successful predators in general, whether solo or in groups, than dogs are. Pound for pound, a cat will win over a dog every time. You don’t have to like it but that doesn’t change the fact.

[@PlainsPup]

Yes! Prehistory of canids, felids, and other carnivorans! Yes, yes, yes! You guys rock!

[@alexandralittle3915]

6:49 WHYYYY, you were my favorite! Now hank has to be my favorite now cause he likes cats

[@ironknee9513]

Yup...it's 4:44 AM and guess what I'm watching ….

[@ghdzmuzic]

Im watching this at 3:52 am lol.

[@qr-code6334]

Here I'm watching this at 2:20

[@agiannetto]

5:10 am here. Ugh

[@Sense8Kai]

3:46 am lol

[@northernskunkgrower3320]

3:02 am here !!

[@kingstonb8130]

Hey you guys I was wondering if you could do a video on how Dinosaurs raised their young. If they even did?

[@29jgirl92]

Oh yeah, that is a really good question! I want to know now too!

[@nature_with_zulfu]

As far as remember from some documentaries they are solid evidence that some species did care their youngsters. If I am not mistaken there is a fosil from Mongolia in which female Oviraptor layed over her chicks (?). And also because of the size of saurapods after hatch, most of the scientists believe that they need care from parents to grow that large bodies. It ciuld be quite interesting to see a show about the topic in this channel.

[@ddsnutz2917]

Well we have evidence of many Dino's caring for their young, like Ovirators and Protoceratops

[@turdl38]

super species dependent and somewhat hard to generalize

[@LimeyLassen]

Also, birds, technically.

[@QuangHoang-ps3mm]

Thumbs up for the narrator's change in speaking speed!

[@Lumberjack_king]

6:33 no wonder why they became our best friends we share the same hunting strategy we made a perfect team

[@Lumberjack_king]

@Commander Wolffe ok

[@Orangeninja5000]

Yep. It's not the only reason, I'm sure, but humans, much like wolves, are endurance hunters.

[@rachaelhart1670]

I almost cried at "who's the cutest little ancestral dog". I don't have an opinion on prehistoric dog cuteness but I do know that PBS eons, YOU'RE the cutest😘

[@collinhennessy6480]

I just farted

[@GetMeThere1]

I love dogs. And it's so interesting how we teamed up and (apparently) worked very closely together.

[@Jetsky_YT]

Yup.

[@rickellis4527]

Dingoes have been in Australia longer then 4,000 yrs there are dreamtime stories older then that, that contain dingoes

[@monkydance2880]

Minority

[@jenson1569]

They are probably of the Thylacine which is now extinct because of dogs.

[@andrewburnett8743]

Using ancient sources as a reference is a bad practice

[@andreagriffiths3512]

The earliest known fossil is around 3,450 years ago but they were probably here long before then. It’s estimated to have occurred between 3,500 and 12,000 years ago.

[@Henriburger1]

How do you carbon date a story?

[@alex-fs9yt]

Cats: meow Bone-crushing dogs: *dies* Less-threatening newer canines: *lives*

[@justarandomperson6401]

ACTUALLY HAPPEND but more accurate Cat: *roars* Bone crushing dog: *Nerfed*

[@justarandomperson6401]

@Spotted Hyenas cats eat people as well that is why they are going extinct, and yes i understand that

[@vojtechpetrak2739]

@@justarandomperson6401 same like a other wild canids

[@6scar911]

I can't stop staring at the art piece where they're hunting. It's insane to me that those creatures were here before us. They're our ancestral cousins. We come from the same earth. How did they see their skies.

[@adamrandles4055]

Eons constantly providing information school never did

[@paulw.9669]

I love the brilliant artwork by Jay Matternes.

[@thomasgullett3525]

This guy deserved his own TV show.

[@freeofavia]

So when are we going to get the origin of cats?

[@catastrophic_biz3608]

freeofavia Satan

[@voyger2561]

Sentient Chin satan

[@nm9864]

Heaven.

[@buzzkillbob6969]

@@nm9864 Satan

[@ricardosoto8533]

BuzzKillBob Heaven

[@ivanclark2275]

I’d love to see more videos like this going through the evolution of other groups, like primates, raccoons, pigs or cats.

[@XeroChilll]

An Eons and a Deep Look video on the same day? Must be Christmas and nobody told me

[@nature_with_zulfu]

And one from it's OK to be smart.

[@KQEDDeepLook]

You deserve it! FWIW we also watched the Eons and IOTBS videos, we're not only network-mates, we're fans.

[@minellechevalier9029]

@PBS Eons: Found your channel and now i'm watching and watching and watching ...