The Rise and Fall of the Bone-Crushing Dogs

  • Published on: 28 August 2018
  • You can go to to get started on your website!

    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 in collaboration with PBS Digital Studios:

    Super special thanks to the following Patreon patrons for helping make Eons possible:
    Katie Fichtner, Aldo Espinosa Zúñiga, Kelby Reid, Steph Summerfield, Todd Dittman, Betsy Radley, Svetlana Pylaeva, Colin Sylvester, Philip Slingerland, John Vanek, Jose Garcia, Noah offitzer, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Wilco Verweij, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Elysha Nygård, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Ehit Dinesh Agarwal, Sapjes, Daisuke Goto, Zachary Winkler, Hubert Rady, Yuntao Zhou, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Ruben Winter, Ron Harvey Jr, Joshua Mitchell, Johnny Li, Jacob Gerke, Katie M Vasilescu, Brandon Burke, Alex Yan

    If you'd like to support the channel, head over to and pledge for some cool rewards!

    Want to follow Eons elsewhere on the internet?
    Facebook -
    Twitter -
    Instagram -

    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.
  • Runtime : 9:38
  • dinosaurs dinos paleo paleontology scishow eons pbs pbs digital studios hank green john green complexly fossils natural history dog Epicyon north america miocene eocene Borophaginae bone-crushing cats canid Canidae Hesperocyoninae grasslands Archaeocyon Hesperocyon canines felines Borophagus Pseudaelurus Bering Land Bridge


  • Amanda Long
    Amanda Long   16 hours ago

    Well I mean I am probably wrong but I'm pretty sure hyenas are k9s not dogs but k9s and can crush bone so I'm probably wrong but isn't the hyena family a bone crushing dog

  • MrLopsidedCrab
    MrLopsidedCrab   18 hours ago

    8:08That is a pun. It isn't all it's 'cracked' up to be.

  • Mecay3
    Mecay3   6 days ago

    It is so cool that we know so much information, just because of some unique stones

  • PatyAnn
    PatyAnn   1 weeks ago

    I'll go with blame the cats. :)

  • Orator Niczego
    Orator Niczego   1 weeks ago

    I wish we have any way of reviving these awesome creatures back to life... Not just to memory.

  • Kingdom Minded
    Kingdom Minded   1 weeks ago

    Some people watch this stuff an run with the information others like me watch this stuff an google any facts or statements he has claimed that’s how you begin to learn for yourself instead of going by word of mouth and from what I’ve seen so far knowledge is just spread by word of mouth via he say she say so Is it really knowledge? Or just memorized information psssed down from generation to generation?

  • Clare Kuehn
    Clare Kuehn   1 weeks ago

    Great information, but spoken a little too quickly. 😍

  • R K
    R K   2 weeks ago

    This host is on drugs and really effective

  • Nick Walker
    Nick Walker   2 weeks ago

    Bone-crushing dogs, spine snapping crocs, aaaand soul crushing cats. sounds about right.

  • DWells52189
    DWells52189   2 weeks ago

    I choose to blame it all on the cats.

  • Vanessa
    Vanessa   3 weeks ago

    Ofc cats happened to doggos

  • ThaC00l Kid
    ThaC00l Kid   3 weeks ago

    My chihuahua still thinking he is more dangerous and bigger than the bone crushing dogs

  • Rob Sorgdrager
    Rob Sorgdrager   3 weeks ago

    Let's not forget the biggest help to, or the other way around... Either way we met and dominated the planet together.

  • DJ Gene
    DJ Gene   3 weeks ago

    That crazy, horned nosed deer thing that they keep showing the dog attacking, looks equally interesting.

  • Gabriella Shimone
    Gabriella Shimone   3 weeks ago

    Is it possible that hesperocyon was the common ancestor of both canidae and felidae?

  • Cameron Buitrago
    Cameron Buitrago   4 weeks ago

    Dogs millions of years ago: can crush bonesMy dog millions of years later: can barely jump onto my couch

  • Rebel Savage
    Rebel Savage   1 months ago

    Actually hyenas are more closely related to felines

  • Ronnie Aspbäck
    Ronnie Aspbäck   1 months ago

    Wolves and humans used to use the same hunting strategy... The long distance hunt... Might be one of the reasons we became best friends

  • honey bear
    honey bear   1 months ago

    In layman's terms from a simpleton's point of view. The Bone crusher looks like it's part feline. Shih tzus French poodles English bulldogs. And so on.. for the exception of Alaskan huskies Malamute German shepherds. Do not show any bone structure or physical features or size. Not to mention recent prehistoric dog that was found in Antarctica . Which is supposedly a subspecies. That is not related or descendant of the canine.... So is it a possibility. the sum of the modern-day canines are not related to the wolf and there's a completely different animal or subspecies involved that it just not have been discovered yet missing link perhaps

  • Dawn Reyestakaki
    Dawn Reyestakaki   1 months ago

    Cats are amazing ❣️❣️❣️❣️❣️❣️❣️

  • Roger Limoseth
    Roger Limoseth   1 months ago

    What happened? We domesticated them and are now known as Chihuahua. We bred the bonecrusher out but not the bonecrusher attitude.

  • tha Real Mike Zee
    tha Real Mike Zee   1 months ago

    Oops I thot this was a video about "bone crushing drugs." I'm out

  • CiCi Guo
    CiCi Guo   1 months ago

    please do a video on the antelope looking animal with an extra horn at the front

  • Revina Que
    Revina Que   1 months ago

    No wonder our dog is terrified of our cats 😂