Was This Dinosaur a Cannibal?

  • Published: 15 August 2019
  • Paleontologists have spent the better part of two decades debating whether Coelophysis ate its own kind. It turns out, the evidence that scientists have had to study in order to answer that question includes some of the strangest and grossest fossils that any expert would ever get to see.

    Thanks to Fabrizio De Rossi and Studio 252mya for the Coelophysis illustration. You can find more of their work here: 252mya.com/gallery/fabrizio-de-rossi

    Produced in collaboration with PBS Digital Studios: superiorjanitorial.pro/user/pbsdigitalstudios

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    References: docs.google.com/document/d/1s1CUTh2bAjYomLOq7rzMKAbOn_YD5M1FuBV-5Y_PL5A/edit?usp=sharing
  • Science and Technology Science and Technology

Comments • 862

  • OHKPodcasts
    OHKPodcasts  15 hours back

    Bite marks from T. rex is definitely from fighting

    • Babu R
      Babu R  3 days back

      The mujungasaurus was a cannibal

      • Royle Hun
        Royle Hun  4 days back

        What if my ancestors killed dinosaurs?

        • Akhmed Minkailov
          Akhmed Minkailov  6 days back

          most predators eat their children when they born dead... or sick..

          • FeroxCious
            FeroxCious  6 days back

            Thanks, Steve.

            • Ian Gillham
              Ian Gillham  6 days back

              The weak shall die and be devoured!

              • American Man
                American Man  1 weeks back

                Every dinosaur is a cannibal. (Except for herbivores)

                Modern day animals that eat meat, dont fight with their own species commonly, but it happens.

                • Bigman Garry
                  Bigman Garry  1 weeks back

                  Yeah they were cannibals

                  • MrTingles
                    MrTingles  1 weeks back

                    what about corn, though. you'd probably be able to tell if they ate corn...

                    • Massimo Beckers
                      Massimo Beckers  2 weeks back

                      ancient barf

                      • Josh Golliver
                        Josh Golliver  2 weeks back

                        Im never pronoucing majungasaurus any other way again

                        • Nicholas Lienandjaja
                          Nicholas Lienandjaja  2 weeks back

                          To be fair, it is possible that many predatory dinosaurs (probably including Coelophysis, raptors, and even T-rex) were cannibals if they were starving or they had no choice. Many other animals still do it today (examples: Komodo dragons, crocodiles, lions, chimpanzees, and hamsters). Anyone who had kept hamsters as pets should know about this.

                          • Max Johnson
                            Max Johnson  2 weeks back

                            "why wouldn't modern dinosaurs eat their young, if ancient ones did, hmmmm?...... Btw, crocodiles do it all the time, but dinosaurs equal birds and birds equal dinosaurs, so..." Hmm. Real puzzler.

                            • Max Johnson
                              Max Johnson  2 weeks back

                              The "birds *are* dinosaurs" thing seems really unnecessary. They're descended from dinosaurs. Isn't that enough for you? Why do we have to pretend a triceratops and a cockatoo are the same thing?? Are apes rodents? Are snakes fish??? Do we say whales are marine pachyderms??? I ask you this, my friend-- is pluto a planet?

                              • life 7
                                life 7  3 weeks back

                                Let's stop demonizing this animal, we are no better. People have and still do eat each other.

                                • Gary Oak
                                  Gary Oak  3 weeks back

                                  wth is hank green doing on a PBS broadcast...

                                  • Casey Ray Harris. Esquire

                                    T-Rex probably just had many K-O's where their opponents bones never healed because they died after receiving them

                                    • Omar Feliciano
                                      Omar Feliciano  4 weeks back

                                      I imagine they must have an Hyena like stomachs to be able to digest those bones.

                                      • Jay W
                                        Jay W  4 weeks back

                                        I gotta watch walking with dinosaurs again now.

                                        • Diogenes TheDog
                                          Diogenes TheDog  4 weeks back

                                          9:25 bitten but not consumed, it would appear

                                          • Solar Corona
                                            Solar Corona  1 months back

                                            3:30 "Herring Gulls and Birds of Pray" - I'm convinced I've seen documentary footage of Pelicans doing this also.

                                            • THË GÄMÏÑG RÄBBÎT
                                              THË GÄMÏÑG RÄBBÎT  1 months back

                                              Majungasaurus was also a cannibal, but only when they were defending a carcass/young, they would just use them as extra food

                                              • Bill Smith
                                                Bill Smith  1 months back

                                                Isn't there a possibility of these animals being eaten after death. And the fellow dinosaurs just being scavengers rather than cannibals

                                                • Linear Wolf
                                                  Linear Wolf  1 months back

                                                  Dinosaur: Hey sister u looking like a snack today~

                                                  • KawaiiMoon
                                                    KawaiiMoon  1 months back

                                                    I just spent around 3 hours watching you. It’s 5AM. I have three major tests today. Help.

                                                    • Philip Cabrera
                                                      Philip Cabrera  1 months back

                                                      2:37 Animal Cannibals lol. Sounds like a Rap group

                                                      • HellbirdIV
                                                        HellbirdIV  1 months back

                                                        Suggesting that non-avian dinosaurs didn't practice cannibalism because modern birds don't is pretty damn stupid. Just because they're the "closest living relatives" doesn't make them analogues to the much smaller role birds play in our modern ecosystems, non-avian dinosaurs filled almost every niche in their time so with countless feeding strategies, social behaviors and millions of years of environmental changes, it seems rather obvious that cannibalism likely emerged in places.

                                                        • anthony sizemore
                                                          anthony sizemore  1 months back

                                                          T.REX? WELL BANG A GONG

                                                          • utmost submarine
                                                            utmost submarine  1 months back

                                                            Came here because of buzzfeed. Staying because of buzzfeed.

                                                            • 3rdeye Brand
                                                              3rdeye Brand  1 months back

                                                              how d you name a dinosaur if they weren't found with name tags???

                                                              • Jorge Soto
                                                                Jorge Soto  1 months back

                                                                he said octopuses

                                                                • Rubber Dub
                                                                  Rubber Dub  1 months back

                                                                  Strange this is being brought up as they are now on about we should start eating our own dead now... hmmm very sinister...

                                                                  • Dajon Ragland
                                                                    Dajon Ragland  2 months back

                                                                    Because it was weak and recognized it

                                                                    • Ao J
                                                                      Ao J  2 months back

                                                                      Marsh wrens have been observed killing the eggs of other wrens and sometimes other birds. (They peck wholes in the shell)

                                                                      • Michael Crockis
                                                                        Michael Crockis  2 months back

                                                                        Minks have a litter of two. Cubs fight right from the second day of their life and the strongest one always kills the weakest. Nature is not a kind aunty Annie.

                                                                        • Mike Or
                                                                          Mike Or  2 months back

                                                                          Birds are not descended from dinosaurs. They are related, but not descendents of dinosaurs.

                                                                          • Angel Caido
                                                                            Angel Caido  2 months back

                                                                            They must 've been killed by toxic gas during a flash flood and they all ended up at the same spot and were covered by sand and mud.That's why they pooed and vomited before dying.

                                                                            • Mizu Sky
                                                                              Mizu Sky  2 months back

                                                                              You ever wonder if some dinosaurs were some what intelligent and buried their dead sometimes.
                                                                              Honestly it crosses my mind a lot.

                                                                              • Dog Guy
                                                                                Dog Guy  2 months back

                                                                                4:40 Middle Schoolers: YO HES GEEEYYYYY

                                                                                • Sarah bearah
                                                                                  Sarah bearah  2 months back

                                                                                  Prehistoric puke hehe

                                                                                  • Anarchy Antz
                                                                                    Anarchy Antz  2 months back

                                                                                    Thing is, if there is meat sitting there going to waste a predator isnt going to be too fussy. Yes I know some dont eat their own kind but if you have the option of either using up energy to hunt down prey and you could also be injured or killed doing it or chow down on your mate that died trying to do just that...............well like any person that scavenges road kill, why waste good food?

                                                                                    • Sok
                                                                                      Sok  2 months back

                                                                                      How the hell do you look at the stone and say "oh this is vomit"? I mean how can you check that it's vomit?

                                                                                      • LL T
                                                                                        LL T  2 months back

                                                                                        Maybe they just ate the stillborn babies and the ones who died shortly after birth. I had a cat who did that with her babies that died of natural causes. I've never seen any other cat do that. Nor do I think it is common.

                                                                                        • Behold! It Knits
                                                                                          Behold! It Knits  2 months back

                                                                                          The second I saw that massive bone in the body cavity I thought something was off. That'd be like a human having a cow femur lodged in their body. It barely even fit in the dino's entire rib cage let alone where it's stomach would have been. Kind of odd that this cannibal theory was accepted for more than two seconds tbh, at least based on that piece of evidence.

                                                                                          • Wisdomosity Art
                                                                                            Wisdomosity Art  2 months back

                                                                                            When your friend is a snacc

                                                                                            • Peppita Chips
                                                                                              Peppita Chips  2 months back

                                                                                              It still doesn’t explain why would they pick that one spot

                                                                                              • Rando Stuffington
                                                                                                Rando Stuffington  2 months back

                                                                                                09:17 Couldn't non healed bite marks also indicate a fight with another member of the same species, of which the wounds were fatal? Doesn't seem to exclusively point towards 'chewing on after death'.

                                                                                                • Trr Tell
                                                                                                  Trr Tell  2 months back

                                                                                                  Bring back the female