The Croc That Ran on Hooves

  • Published on: 01 May 2019
  • Our Pocket Shirt!:

    In the Eocene Epoch, there was a reptile that had teeth equipped for biting through flesh, its hind legs were a lot longer than its front legs and instead of claws, its toes were each capped with hooves. How did this living nightmare come to evolve?

    Thank you to these paleoartists for allowing us to use their wonderful illustrations:
    Ceri Thomas:
    Fabrizio De Rossi:
    Nobu Tamura:
    Esther van Hulsen:
    Stanton Fink:

    Produced in collaboration with PBS Digital Studios:

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  • Runtime : 9:8
  • dinosaurs dinos paleo paleontology scishow eons pbs pbs digital studios hank green john green complexly fossils natural history Crocodile crocodilian boverisuchus pristichampsus hooved crocodile ziphodont geiseltal competition niche planocraniidae planocrania Oxyaenoides palaeotis propalaeotherium creodont nimravid Asiatosuchus Diplocynodon Allognathosuchus prey partitioning niche partitioning evolution


  • A Stick
    A Stick   12 hours ago

    Imagine if that still existed and we domesticated them. Picture this; you're going out to battle then the ground starts shaking.A stampede of riders is approaching, and instead of what you'd expect which would be horse riders you are surprised by an ARMY OF SOLDERS RIDING FRIKKING ARMORED CROCODILES RUNING AT A FULL CHARGE!!

  • FivePointOhVic
    FivePointOhVic   1 days ago

    When did it become faster to run with 2 legs than 4? It’s always faster on 4 limbs. If lions and big cats ran on 2 legs they would never catch anything. So I doubt it ran on it’s back legs

  • IPIay
    IPIay   1 days ago

    Just waiting for someone to discover something that looks like a Frogzard.

  • BoomStar Furry15
    BoomStar Furry15   1 days ago

    Steve Irwin: Crickey! look at this beauty! giant croc gets up and starts running full sprint towards himSteve: "..... oh no."

  • Frost Rusher
    Frost Rusher   2 days ago

    When a Quadripedal reptile run bipedal. It has to be really quick to keep itself balanced.

  • Cai Kween
    Cai Kween   2 days ago

    To add to the two foot running; I wonder if, like my cat, they very briefly stood on their back feet to see better? Possibly using the tail to balance.

  • Daniel McDavid
    Daniel McDavid   5 days ago

    Wait... Isn't that Postosuchus at 1:48 ? That was a relative of crocodilians that lived in the Triassic! And you are saying Crocodilians didn't emerge until the Cretaceous ?Triassic ~250Mya to ~200MyaCretaceous ~150Mya to ~66Mya

  • The War Yoshi
    The War Yoshi   5 days ago

    Your walking around a forest and hear some clopping. You think it’s a deer. Then a croc jumps out and starts running at you

  • Charles Bronson
    Charles Bronson   6 days ago

    They are bad enough with their stupid stubby legs and u say at one time they had hoofs 😨

  • Marco M
    Marco M   6 days ago

    Damn nature you scary

  • Drake Stallworth
    Drake Stallworth   6 days ago

    For some reason, I read the title to the theme of “The Farmer in the Dell”

  • s s
    s s   6 days ago


  • Gabriel Susman
    Gabriel Susman   1 weeks ago

    What's the threshold of being a set of hooves? Does it have more to do with the skeletal structure under the hood than the joined toenail/claw we see on the contemporary ungulates, goats, and horses? Because what I just saw was a crocadillian that was better optimized for running, but not actually in the possession of what I previously thought were hooves. Correct me if I'm wrong.

  • Ryan Renshaw
    Ryan Renshaw   1 weeks ago

    Imagine if horses ate people and hunted in groups. If you saw them it would look very majestic but it would also mean they are going to crunch you to pieces. But Elephants would be worse, elephants have been noted to eat humans in very rare circumstances, if evolution pushed them in a certain direction it would turn bad very quickly.

  • rex fleming
    rex fleming   1 weeks ago

    Land-dwelling, upright-walking crocodilians were still in existence, in Australia, the South-West Pacific, and perhaps also Cuba, until the Late Pleistocene or Early Holocene, until early humans, arrived in these lands. A family of land-dwelling crocodiles known as Mekosuchians were found in Australia, Vanuatu, Fiji and New Caledonia; they became extinct in New Caledonia and Fiji as recently as four or five thousand years ago, obviously victims of early human settlement. Large Mammalian predators were found in Australia during the Pleistocene, so clearly the Mekosuchians were capable of holding their own against them, and were not driven into extinction by the presence of Mammalian carnivores.

  • Whuzzin Gamont
    Whuzzin Gamont   1 weeks ago

    Thank god they went extinct. Have yall seen how fast crocs can run even with their short legs? With hooves...

  • Julio Sunga
    Julio Sunga   1 weeks ago

    golf would have been more exciting if these things are still around

  • Max Ng
    Max Ng   1 weeks ago

    I'm gonna take my croc to the old town road, gonna riiiiiiiiiide til I can't no more

  • Chris Harmon
    Chris Harmon   1 weeks ago

    people will believe anything. first we came from monkeys and now crocodiles with hooves.

  • Detective Conan
    Detective Conan   1 weeks ago

    This crocs are on "Cage of Eden" anime manga. Read it its interesting.

  • Amanda Long
    Amanda Long   1 weeks ago

    99.9 percent of comments dank memes1 percent me wondering y there are so many memes

  • Wu Li
    Wu Li   1 weeks ago

    Bears and other animals have longer hind legs which don't allow them to walk upright with grace, but make it easier to run uphill, climb trees, and stand on their hind legs to look more imposing. A crocodile climbing trees sounds even more interesting.

  • The Gluteus Maximus
    The Gluteus Maximus   2 weeks ago

    Imagine strapping on a saddle and riding one of THESE babies into battle.

  • Carlos Malave
    Carlos Malave   2 weeks ago

    What a bunch of CROC! See what I did there🤪🤪🤪🤪🤪🤪🤪🤪🤪🤪