Line #47 Main/HeadButtingPachy


1	[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/p03phwby.jpg]]
2	[[caption-width-right:350:When fist bumps just aren't cool enough.]]
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4	[[https://en.wikipedia.org/wiki/Pachycephalosauria Pachycephalosaurid]] dinosaurs (sometimes colloquially referred to as a pachys), of which the famous ''[[https://en.wikipedia.org/wiki/Pachycephalosaurus Pachycephalosaurus]]'' is a member, are typically shown headbutting each other much like you would see in rams, goats and oxen. They've even been shown to headbutt other things with a devastating amount of force without sustaining any major injury. This was popularized by the story "A Gun for a Dinosaur", of the ''[[https://en.wikipedia.org/wiki/Rivers_of_Time Rivers Of Time]]'' series by Creator/LSpragueDeCamp.
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6	Pachycephalosaurs in fiction will be far more aggressive at the very least. They will often be shown charging at top speed into everything in sight, be it other members of their own species, bigger dinosaurs, or time machines with people inside. They're also likely to be depicted as aggressive and violent, in a departure from the usual depiction of [[HerbivoresAreFriendly plant-eating dinosaurs]] in fiction (though pachycephalosaurs were most likely omnivorous). Also, especially in older works, pachycephalosaurs will sometimes be shown as [[AnimalsNotToScale far larger than any real-life species]], being on the same scale as hadrosaurs or ceratopsids, even though ''Pachycephalosaurus'' (the largest of the bunch) was no bigger than a horse, and most of its kin, like ''Stegoceras'' and ''Prenocephale'', were dog-sized at best.
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8	The head-butting behavior is [[https://www.nationalgeographic.com/science/article/butting-heads-over-skull-injuries-and-dinosaur-head-butts debated in paleontology circles]]: some argue that the necks were too weak to support head-on collisions, or else that smoothly rounded domes would have been too likely to slide off of each other, and point to the spikes and sides of the head to say pachycephalosaurs swung their heads more like one does a hammer. On the other hand, others say the injuries found on pachycephalosaur skulls match head-on collisions similar to sheep and goats. Others still argue that some mixture of behaviors may have occurred, so that fights between pachycephalosaurs may have consisted of mixtures of head-to-head collisions, shoving matches, and strikes to the legs and flanks.
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10	Naturally this is a subtrope of ArtisticLicensePaleontology, due to it being about the exaggerated portrayal of a prehistoric animal, and of UseYourHead. It's also a subtrope of AnimalStereotypes, in a rare case where the stereotype belongs to a long-extinct species. Compare RaptorAttack, GentleGiantSauropod, and SocialOrnithopod for stereotypical depictions of other dinosaur species, and TemperCeratops and ToughArmoredDinosaur in particular for another cases of herbivorous dinosaurs being portrayed as aggressive and dangerous. It also doubles as a form of BeastlyBloodsports when they're ramming each other for territory or for a mate. [[JustForFun/IThoughtItMeant Don't confuse with]] pachy''derms'' headbutting; those would be an example of RhinoRampage, CruelElephant, or AngryAngryHippos.
11	----
12	!!Examples:
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14	[[foldercontrol]]
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16	[[folder:Anime and Manga]]
17	* ''Anime/DaikyouryuNoJidai'': A pair of of ''Pachycephalosaurus'' are shown to be headbutting each other so hard that it not only gets the attention of other dinosaurs, but scares them too. [[spoiler:Not the ''Tyrannosaurus rex'' though, he came for dinner.]]
18	* ''Manga/{{Doraemon}}'':
19	** ''Anime/DoraemonNobitasDinosaur'' briefly showed a pair of male ''Pachycephalosaurus'' head-butting each other to win over a female. Later, one ''Pachycephalosaurus'' rams the ship of some time-travelling poachers as the other captive dinosaurs are breaking out.
20	** One episode of the 2005 anime made in the 2010s had Nobita getting chased by a ''Pachycephalosaurus'' which tries to smash him with its head. Amusingly, this is subverted when Doraemon comes to his rescue and accidentally head-butts the ''Pachycephalosaurus'' on its domed head, knocking it out.
21	* ''Manga/{{Jabberwocky}}'': Tuzo, a bodyguard for Dorohov, is a humanoid Pachycephalosaurid who fights by using his thick bone skull to ram through his opponents
22	* ''Manga/OnePiece'' has Ulti of the Animal Kingdom Pirates, whose Devil Fruit allows her to turn into a ''Pachycephalosaurus'', complete with a headbutt-based moveset.
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25	[[folder:Card Games]]
26	* ''TabletopGame/MagicTheGathering'': [[https://scryfall.com/card/mb1/258/territorial-hammerskull Territorial Hammerskull]], a pachycephalosaur-like dinosaur shown lifting a much larger predator off its feet with a headlong charge.
27	-->''From the eyes up, it's solid bone and stubbornness.''
28	* ''TabletopGame/WeirdNWildCreatures'': The fact card for the ''Pachycephalosaurus'' mentions that they use their heads as battering rams for head-on collisions. Interestingly earlier it mentions that they could have used their heads to slam into the side of their rival which would be a {{aver\|tedTrope}}sion of this trope since they'd be targeting a far softer area.
29	* ''TabletopGame/YuGiOh'' has the similarly-named "Hyper Hammerhead", a Dinosaur-type monster resembling a ''Pachycephalosaurus'' with a head shaped like a literal hammer.
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32	[[folder:Fan Works]]
33	* ''Heavily'' downplayed with the pachycephalosaurs in ''Fanfic/PrehistoricParkReimagined'' when first introduced, as none of the adult pachycephalosaurus rescued in t-rex centric episode ''Return of the King'' are featured even charging at or ramming their heads against anything, let alone doing so against each other, but some of the juveniles are shown to playfully headbutt and ram each other in the safety of their new paddock at the park after their rescue. The texacephale rescued in ''D-Bags'' likewise choose to flee instead of fight back against a pack of newly discovered tyrannosaurs that try to hunt them. [[DoubleSubversion Ultimately played straight later]], however, in BigStormEpisode ''Hell's Labyrinth'' when the entire pachycephalosaurus engage in this behavior against an invading escaped pack of Morrison Formation allosaurus.
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36	[[folder:Films -- Animation]]
37	* Averted in ''WesternAnimation/IceAgeDawnOfTheDinosaurs'' where ''Pachycephalosaurus'' are never shown head-butting anything. However, this is played straight in the tie-in video game where Buck must ride on a ''Pachycephalosaurus'' and get it to break through rock walls by head-ramming them.
38	* ''WesternAnimation/TheLandBeforeTime'': In the first film a group of ''Pachycephalosaurus'' are seen ramming their heads together and into the ground in an attempt to attack Cera, all without any injury.
39	* ''Animation/SpecklesTheTarbosaurus'': Ironically shown with a bit of TruthInTelevision the losing ''Pachycephalosaurus'' ending up [[TapOnTheHead knocked out]], which as stated above in the description could easily end up being a death sentence for an animal.
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42	[[folder:Films -- Live-Action]]
43	* ''Franchise/JurassicPark'' makes use of this alongside a wide variety of other stereotypical -- and generally inaccurate -- dinosaur traits. {{Justified\|Trope}} InUniverse due to the dinosaurs having been created to have audience-pleasing traits such as increased strength and aggressiveness, and having been designed to align with what audiences wanted to see rather than with scientific accuracy.
44	** ''Film/TheLostWorldJurassicPark'': The scene with the ''Pachycephalosaurus'' getting captured shows it ramming into the side of a jeep. This not only causes the jeep's door to be torn in half, but also sends the man inside flying out the other side. This shouldn't be possible since (hopefully) like most of the other vehicles used by Ludlow's Team, it was intentionally modified to help them against the dinosaurs.
45	** ''Film/JurassicWorld'': Not seen, but it is discussed that when ''Pachycephalosaurus'' butt heads they temporarily disable their implants, implying that their implants are in or around the pachys' heads, without harming themselves.
46	** ''Film/JurassicWorldFallenKingdom'': {{Downplayed\|Trope}}, but still ultimately present with the ''Stygimoloch'' who manages to [[BatteringRam ram down a brick wall and a steel cage door]]. Although it did take the dinosaur a unspecified amount of time it is the only dinosaur to have broken out despite the fact that several dinosaur powerhouses (''T. rex'', ''Triceratops'', ect.) were also kept in similar cages. [[SurprisinglyRealisticOutcome The experience does leave its mark on the animal, as it seems fairly dizzy and disoriented for some time after this]].
47	* One of the many dinosaurs who appears in ''Film/TyrannosClaw'' is a pachy, who initially appears docile until a Dark Tribe caveman tries provoking it. The Pachy then reacts violently and even headbutts one of the tribesmen to death.
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50	[[folder:Literature]]
51	* The magic Wannanosaurus in ''Literature/DinosaurCove'' has the tendency to do this.
52	* ''Literature/{{Dinotopia}}'' averts this, never depicting pachycephalosaurs as headbutting anything. Although some ''Pachycephalosaurus'' are shown using their heads to push a large, wooden device operating a lathe room in a Volcaneum .
53	* ''Literature/TheFantasticDinosaurAdventure'': When the protagonists visit the Cretaceous period, they observe two male ''Pachycephalosaurus'' engaging in head-butting combat over a harem of females.
54	* In ''Literature/TheLostWorld1995'' paleontologist Levine points out several pachys to the kids, noting their reinforced skulls presumably used to butt heads in dominance displays. Malcolm [[DeadpanSnarker dryly]] notes "Yes, butting heads. Exactly as you see them doing right now," ([[SubvertedTrope the pachys are just milling about and grazing, utterly peaceful]]). Levine exasperatedly retorts that such thick skull reinforcement must have had ''some'' purpose. Later, Sarah Harding runs afoul of a herd of pachys, specifically comparing them modern animals like cows, American bison, and African buffalo, who are three distinctly different degrees of dangerous. The pachys turn out to have something of a HairTriggerTemper, and [[DoubleSubverted charge at anything they perceive as a threat]]. . . which, in this instance, includes Sarah Harding.
55	* ''Literature/TheMagicSchoolBus'': ''In the Time of the Dinosaurs'' mentions that pachycephalosaurids "may have butted heads like rams", which normally [[AvertedTrope wouldn't be a problem]] since it's stated as a theory instead of fact, but then proceeds to illustrate two ramming each other head on in the background.
56	* ''Literature/RiversOfTime'': As stated above, the story "Literature/AGunForADinosaur" popularized the idea of ''Pachycephalosaurus'' violently ramming things with their domes, making it the TropeCodifier.
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59	[[folder:Live-Action TV]]
60	* ''Series/DinoDan'': Two ''Stygimoloch'' are shown head-butting each other like battering rams.
61	* ''Series/PowerRangersDinoCharge'': {{Justified\|Trope}} due to being a {{Mecha}}, the pachy Zord naturally [[UseYourHead headbutts]] enemies.
62	* ''Franchise/SuperSentai'': {{Justified\|Trope}}, as the ''Pachycephalosaurus'' are {{Mecha}}:
63	** ''Series/BakuryuuSentaiAbaranger'' has Bachycelo, a Bakuryuu whose thick skull can then be weaponized as a PowerFist for the giant mechas. His powerset is even compared to boxing and punches, and he even sports a natural pair of gloves.
64	** ''Series/ZyudenSentaiKyoryuger'': Zigzagged, one of the Zyudenryu, Bunpachy, can headbutt enemies like a stereotypical pachycephalosaurus, but its main power is swinging its mace on its tail. Curiously, the mace is attached to its head before activation. Its Ranger partner has also used a headbutt technique on occasion.
65	* ''Series/PrehistoricPlanet'': In the "Swamps" episode, male ''Pachycephalosaur''s are depicted this way, crashing heads together to impress females. The end of the episode features a "''Prehistoric Planet'': Uncovered" segment, which breaks from the usual {{mockumentary}} format to ask [[https://www.youtube.com/watch?v=eL8lbCW1yn0 Was Pachycephalosaurus Really a Headbutter?]], laying out the evidence for (the many lesions found on the skulls themselves) and against (the argument that the animal's bones were not strong enough to absorb the impact). The showrunners commissioned an experiment using CT scanning technology of the same kind that is used to test the structural integrity of airplanes parts, and concluded that the bones were indeed strong enough.
66	-->'''Creator/DavidAttenborough''': We now believe pachycephalosaurs used their head both as a formidable weapon and as a colourful display. Two ways to demonstrate who was boss in their prehistoric world.
67	* ''Series/PrimevalNewWorld'': A ''Pachycephalosaurus'' goes on a rampage through the city of Vancouver, smashing storefronts with its head after mistaking its reflection for a rival.
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70	[[folder:Tabletop Game]]
71	* ''TabletopGame/{{Pathfinder}}'': ''Pachycephalosaurus'' is an otherwise relatively unremarkable herbivorous animal distinguished chiefly by its ability to make powerful headlong charges against its foes.
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74	[[folder:Video Games]]
75	* ''VideoGame/ARKSurvivalEvolved'': For the most part the game seems to [[AvertedTrope avert this trope]], with any combat excused to this for easily being {{Justified\|Trope}} due to the limited GameMechanics, and then you discover that ''Pachycephalosaurus [[{{Whateversaurus}} leniproelia]]'' can knock trees over by ramming them.
76	* ''VideoGame/{{Carnivores}}'': The game's instruction manual mentions that ''Pachycephalosaurus'' use their thick skull rimmed with knobby spikes as a battering ram against other dinosaurs for defense. Ironically this isn't seen in the game and their neck is a target for hunters.
77	* ''VideoGame/EVOSearchForEden'': Happen to appear occasionally in the third chapter "The Age of Dinosaurs" (called ''Polsaurus'' in the localization), using the headbutt attacking method either against you or themselves. The player could attack them for some experience points or just leave them peacefully and let "Polsaurus" fight each other instead.
78	* ''VideoGame/FossilFighters'': Several different species of Pachycephalosauria are present and all have skills that have the word "Headbutt" and/or "Ram" in them, [[ImpliedTrope implying this trope]].
79	* ''VideoGame/LEGOJurassicWorld'': In the story mode there is a show that has a ''Pachycephalosaurus'' ram three pillars of solid rock, while gameplay as one has all attacks from it involve using its head to smack or ram into things.
80	* ''VideoGame/MonsterHunterWorld'': The Kestodon and Gastodon, two species chiefly based off of pachycephalosaurs, attack exclusively by headbutting foes.
81	* ''VideoGame/MonsterSanctuary'': Rampede is a bipedal, MixAndMatchCritter dinosaur who can break crystal blocks and hidden walls in the overworld by charging into them.
82	* ''VideoGame/PaleoPines'': ''Pachycephalosaurus''es can smash rocks with their head-domes.
83	* ''VideoGame/PokemonDiamondAndPearl'': Cranidos and its evolution Rampardos are both based on pachycephalosaurs, and both are routinely shown performing headbutting attacks such as Headbutt, Take Down, Zen Headbutt and Head Smash. Their Pokédex entries also focus almost entirely on their propensity for headbutting things, mentioning how their skulls were hard as iron and used for smashing inconveniently placed trees and taking down prey. Rampardos' entries claim it to have a foot-thick skull that shields it from any harm its headbutting may cause, although it also stifles the growth of its brain, and that a cloned specimen destroyed a skyscraper by headbutting it.
84	* ''VideoGame/PrimalCarnage'': The ''Pachycephalosaurus'' is the first non-carnivorous reptile (although it still heals by eating meat in-game) to be made playable. Since it has no sharp claws or teeth, its only method of attacking humans is.... well, guess.
85	* ''VideoGame/{{Temtem}}'': Vulcrane vaguely resembles ''Pachycephalosaurus'', with its armoured head, bipedal stance, and long tail. It's also described as fierce and learns the attack Head Ram.
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88	[[folder:Web Animation]]
89	* ''WebAnimation/DinosaursTerribleLizards'' [[https://m.youtube.com/watch?v=InPHe6xJ8EY features two Pachys]] (who look like purple hotdogs with legs) attempting to headbutt one another, ''completely missing each other'', and continuing to charge blindly for ''several miles'' until one of them eventually falls off a cliff. [[DerangedAnimation This is one of the LESS weird things in the animation.]]
90	* ''WebAnimation/MightyMagiswords'': One episode has Prohyas and Vambre going up against one of King Rexxtopher's minions which is a ''Pachycephalosaurus'', who headbutts Vambre and later {{No Sell}}s a pogo stick attack on the head from the duo.
91	* ''Creator/{{Pinkfong}}'': The Dinosaur series of the WebAnimation has a ''Pachycephalosaurus'' that [[https://www.youtube.com/watch?v=Ofcz0Zd8OlA sings about being the "king of head-butting"]] and using this against predators like ''Tyrannosaurus rex'' by charging, which would have in most cases have actually caused them more harm than good.
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94	[[folder:Web Comics]]
95	* ''Webcomic/DumbingOfAge'': After Sal gets into Dina and Amber's room by [[HiddenDepths naming Pachycephalosaurus as her favourite dinosaur]] her and Dina end up [[ConversationalTroping talking]] about the trope [[https://www.dumbingofage.com/2018/comic/book-9-comic/01-flyin-to-the-red/pachy/ in an attempt to break the ice]]. A Patreon-exclusive flashback strip has Sal hitting Walky with a flying headbutt and the dino's name as a battle cry.
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98	[[folder:Western Animation]]
99	* ''WesternAnimation/DinkTheLittleDinosaur'': "The Reluctant Head-Banger" had Shyler befriending a ''Pachycephalosaurus'' named Nobbie who lacks confidence challenging his herd members in head-butting contests. At one point, Dink mentions "dome-heads" cannot feel a thing when they ram heads since her skulls are "really solid". Eventually, Nobbie gets over his fear when he saves the kids from a rockslide by smashing the rocks with his head.
100	* ''WesternAnimation/DinoRanch'' has Bopper, a baby ''Pachycephalosaurus'' who has a habit of using his species' famous thick skull to butt anything he comes across.
101	* ''WesternAnimation/DinoRiders'': The Valorians/Dino-Riders use ''Pachycephalosaurus'' to smash large rocks with their domed heads. They're also mentioned to be used for clearing rubble, presumably the same way. Both actions would have likely have caused the dinosaurs harm.
102	* ''WesternAnimation/{{Dinosaucers}}'': Normally averted with Bonehead, who is not usually shown head-butting things and isn't even drawn with a visible skull dome, but played straight in an episode where he "Dinovolves" and rams his head into a building.
103	* ''WesternAnimation/DinosaurTrain'': {{Defied}} in an episode where the kids meet a pair of ''Pachycephalosaurus'' siblings who headbutt each-other in the ''sides''.
104	* ''WesternAnimation/{{Dinotrux}}'': Cementasaurs are a species of Dinotrux who are half-''Pachycephalosaurus'' and half-cement mixer, who use their domed heads to ram into walls and attack enemies. In the episode where the species is introduced [[ThoseTwoGuys Chunk and Crunk]] accidentally ram themselves while trying to hit Waldo.
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107	[[folder:Real Life]]
108	* The [[https://en.wikipedia.org/wiki/Drayton_Manor_Theme_Park Drayton Manor Theme Park's]] ''Dino Trail'' attraction features two ''[[https://www.themeparkreview.com/parks/pimages/Drayton_Manor/Theme_Park_Reviews_2010_UK_Trip/draytonmanor_099.jpg Pachycephalosaurus]]'' about to headbutt each other.
109	* Numerous animatronic displays used in natural history museums have featured a pair of ''Pachycephalosaurus'' butting their heads together.
110	[[/folder]]

Context Main / HeadButtingPachy