44 - Pachy

Pachycephalosaurus Reconstruction

Common Name Pachycephalosaurus
Group Dinosaurs
Species Pachycephalosaurus leniproelia
Time Late Cretaceous
Diet Herbivore
Temperament Passive
Egg Pachy Egg
Feces Size Small
XP For Kill 2 XP
PC Release Date September 11, 2015 (v207.0)
Favorite Kibble Kibble (Dilo Egg)
Tameable Yes
Rideable Yes
Saddle Pachy Saddle (lvl 15)
Incubation Range 24 - 28 °C / 75 - 82 °F
Incubation Time 1h 25m 42s
Baby Stage Time 2h 38m 43s

Pachycephalosaurus is a bit of a conundrum. It is a very passive (even friendly) herbivore, common to much of the island. At the same time, it is one of the most dangerous herbivores that I have yet encountered on the island. Its charging headbutt is a display of sheer physical power, and can kill much more quickly than you might think.

While Pachycephalosaurus is generally amiable, it has a short temper. Its fight-or-flight response always seems to choose "fight"!

The Pachy becomes extremely aggressive once attacked.

Additionally, it is an incredibly fast sprinter, so escaping from an enraged Pachy is very difficult.


Pachycephalosaurus is an excellent battle-mount for those who want to ride a smaller, nimble combatant into the fray. Because of its particular musculature, it cannot effectively carry large quantities of resources. It can, however, move with brief magnificent bursts of speed, and its headbutt is simply devastating.

— The Dossier

The Pachycephalosaurus or Pachy is a medium sized herbivorous dinosaur found on the Ark. The Pachycephalosaurus, meaning "thick headed lizard," is known for having a large, bony dome atop its skull, which it can use to ram attackers.


Although being a herbivore, the Pachycephalosaurus becomes very aggressive once attacked and will try to kill the attacker. Escaping an angry Pachy is difficult, due to their high movement speed and their attack which adds torpor. The best way for taming one is to climb on a rock before attacking, so that they can´t knock you out. If there are no rocks in the general area or if the Pachy can climb the rocks, keep moving sideways to avoid its slow straight forward attack(this method takes constant attention).



Common dinosaur, can be found on the grasslands of the island.


Leveling statistics

  • Base Statistics
    • Health: ?
    • Stamina: ?
    • Oxygen: ?
    • Food: ?
    • Weight: ?
    • Melee Damage: ?
    • Movement Speed: ?
    • Torpor: ?
      • Torpor: increased to by ?


  • The real-world dinosaur had a length of up to 4.5 meters. ARK's Pachycephalosaurus is smaller at 3.75 meters.

Gameplay Images



Spotlight Pachycephalosaurus!

Spotlight Pachycephalosaurus!