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These values may differ with what you see in-game or written elsewhere. But that is what the dossier says.
Common Name
Tyrannosaurus dominum
Time Period
Late Cretaceous
Logo Steam.png
June 2, 2015
Logo Xbox One.svg 729.0
December 16, 2015
Logo PS4.svg 501.0
December 6, 2016
Logo Mobile.svg 1.0
May 24, 2018
Spawn Command
admincheat summon Rex_Character_BP_C
admincheat SpawnDino "Blueprint'/Game/PrimalEarth/Dinos/Rex/Rex_Character_BP.Rex_Character_BP'" 500 0 0 35
XP For Kill
60 XP
Special Loot Chance
32 - 34 °C / 90 - 93 °F
Incubation Time
4h 59m
Baby Time
9h 15m
Juvenile Time
1d 13h 2m
Adolescent Time
1d 22h 17m
Total Maturation Time
3d 20h 35m 32s
Breeding Interval
18h - 2d

The Island Topographic Map.jpg
Spawning Rex The Island.svg

Scorched Earth Topographic Map.jpg
Spawning Rex Scorched Earth.svg

The Center Topographic Map.jpg
Spawning Rex The Center.svg

Ragnarok Ocean Topographic Map.jpg
Spawning Rex Ragnarok.svg

Common             Rare
  Untameable   Cave

The Tyrannosaurus (tye-RAN-uh-SAWR-us), or simply Rex, is one of the dinosaurs in ARK: Survival Evolved. The Tyrannosaurus is a huge, bulky predator that dominates virtually all of the island. It has considerably more health and stamina compared to Spinosaurus, but lacks the attack speed that Spinosaurus has. They are also incredibly slow in water, making them vulnerable to attack from below, but they make up for these drawbacks with sheer size and strength.

Basic Info[edit | edit source]

Dossier[edit | edit source]

This dossier section is intended to be an exact copy of what the survivor Helena, the author of the dossiers has written. There may be some discrepancies between this text and the in-game creatures.


Arguably the deadliest creature on the Island, Tyrannosaurus dominum is a killing machine. Active mostly when hunting for food or defending its nest, a good plan is to avoid every Tyrannosaurus.

It is pure power -- from its stomp to its tail. It is not able to intimidate every foe with its roar, but upon hearing it, it might scare the poop out of you - quite literally.

Despite being a different sub-species of Tyrannosaurus, everyone I've met still refers to them as a "Rex" or a "T-Rex". I've long since stopped trying to convince anyone, especially the few who I've encountered wearing Tyrannosaurus teeth as necklaces.


Taming a Tyrannosaurus is without a doubt the goal for any warlord or warring tribe. Tyrannosaurus is a fierce battle companion. There is a reason Tyrannosaurus is considered the king of dinosaurs (or in this genus, the "lord"). Any tribe that manages to tame one has almost nothing to fear.

~ Helena

Behavior[edit | edit source]

Highly aggressive, Tyrannosaurus will attack most living creatures in sight aside from other apex predators. They're extremely bulky, having nearly double the health of Spinosaurus of the same level. They also possess surprisingly good stamina for their size, of which is also greater than that of any same-leveled Spinosaurus. What Tyrannosaurus' lack in attacking speed (when compared to a Spinosaurus) they make up for in sheer stamina and health. As stated in the dossier, it is considered the ultimate predator present on the island, those who tame them are to be feared like no other.

Appearance[edit | edit source]

T. dominum is an exceptionally large (and often colorful) theropod dinosaur found on the island. They are covered in small, pebbly scales that are often interrupted with large osteoderms. Their underbelly, however, is smooth and tan with small rectangular plate-like scales. Along their neck and back there is a large ridge of large bony scutes that may be used to protect their vertebrae from the jaws of other carnivores (including other T. dominum.) They have proportionately long legs that end in three thick, padded toes, each decorated with one large claw. T. dominum regularly exceed fifty feet in length, however, they possess disproportionately small arms. Strangely, these arms are heavily muscled and extremely thick. When tamed and ridden no carnivores except for other Rexes, Spinosaurus, Giganotosaurus, Yutyrannus and Therizinosaurus will attack you if you don't attack them first, which makes it easy to travel with the rex without being hunted by other dinosaurs.

Color Scheme and Regions

Patch 278.0 removed PaintRegion 3 (former Back), Patch 278.2 added PaintRegion 4 as new Back


This section displays the Rex's natural colors and regions. For demonstration, the regions below are colored red over an albino Rex. The colored squares shown underneath each region's description are the colors that the Rex will randomly spawn with to provide an overall range of its natural color scheme. Hover your cursor over a color to display its name and ID.

Server admins can use this region information in the Console Command "cheat SetTargetDinoColor <ColorRegion> <ColorID>".
For example, "cheat SetTargetDinoColor 0 6" would color the Rex's "body" magenta.

Rex PaintRegion0.jpg
Region 0:
Rex PaintRegion1.jpg
Region 1:
X mark.svg

Region 2 is not used
for this Creature.

X mark.svg

Region 3 is not used
for this Creature.

Rex PaintRegion4.jpg
Region 4:
Rex PaintRegion5.jpg
Region 5:

Drops[edit | edit source]

Guaranteed Special Loot

Breeding[edit | edit source]

One of the more difficult dinos to breed in captivity, due to difficulty in maintaining proper egg temperatures and the long period of hand feeding the infant. Recommend at least 2 Air Conditioners and multiple standing torches to aid in maintaining the egg at the proper temperature. Between monitoring the egg during incubation and hand feeding the infant, it is a 8-9 hour commitment to get the baby to the stage where it will eat out of a feeding trough.

  • Temperature: 85-95 degrees F / 29 - 35 degrees C (not accounting for insulation)
  • Incubation: Approximately 5 hours
  • Maturation: Approximately 3 days 20 hours and 30 minutes.

Base Stats and Growth[edit | edit source]

Note that creatures will have different stats in Survival of the Fittest

Basic Stats
Attribute Amount at Level 1 Increase per point Taming Bonus
Wild Domesticated1 Add Mult
Health.png Health 1100 +220 +5.4% 0.07
Stamina.png Stamina 420 +42 +10%
Oxygen.png Oxygen 150 +15 +10%
Food.png Food 3000 +300 +10%
Weight.png Weight 500 +10 +4%
Melee Damage.png Melee Damage 622 +3.1 +1.7% 7% 17.6%
Movement Speed.png Movement Speed 100% N/A3 +1%
Torpidity.png Torpidity 1550 +93 N/A4 0.5

1Percentages are based on the value of the stat the moment the creature was tamed (after taming effectiveness)
2The absolute Base Damage is shown here instead of the percentage.
3Wild creatures do not level up movement speed
4Torpidity increases every level on wild creatures, but can not be increased once they are tamed.

Movement Speed
Movement Type Base Speed Sprinting Stamina Used
Wild Domesticated
Walking 515 736.45 1104.6749 40
Swimming 300 N/A N/A N/A

Attack Values
Bite Stamina Cost Attack Range Description
Base Minimum Activation Using the Left Mousebutton (PC), R2 Button (PS4), RT Button (Xbox One), the Rex bites the target.
0 1200 0 0
Attack Type Damage Projectile Values Torpor Values Status Effect: Stamina Status Effect: Torpidity
Life Impulse Radius Base Mult Duration Damage Mult Amount Duration Damage Mult Amount
Melee 62
Roar Stamina Cost Attack Range Description
Base Minimum Activation Using the Right  Mousebutton (PC), L2 Button (PS4), LT Button (Xbox One), the Rex unleashes a menacing roar to frighten opposing survivors.
0 0 0 0
Bite (AI) Stamina Cost Attack Range Description
Base Minimum Activation The Rex bites the target. This attack's values are only used by a wild or an unridden tamed creature only.
0 1200 0 0
Attack Type Damage Projectile Values Torpor Values Status Effect: Stamina Status Effect: Torpidity
Life Impulse Radius Base Mult Duration Damage Mult Amount Duration Damage Mult Amount
Melee 62

Wild Stats Level-up

Type in values of a wild creature to see on which stats it's emphasized. Green values on a high-level creature are very good for breeding. If you have already tamed your creature you can try to recover the breeding-stats with an external tool.[1]

The stat-calculator does not work in the mobile-view, see here for alternatives: Apps

Note that after the creature is tamed it gets bonuses on some stats depending on the taming effectiveness. This makes it hard to retrieve the levels on a tamed creature, so this tool is only for wild ones, but gives a first impression, how well the stats are distributed.

Taming[edit | edit source]

For general infos about domesticating a wild creature see Taming.

KO Strategy[edit | edit source]

Since Rexes are relatively fast and incredibly strong, trying to tame a Rex solo on flat ground is almost never a good idea. Bring a few friends and shoot Tranq Arrows at its head. Beware that it too will flee once torpor gets low.

Common strategies include:

  • Build a tower 10 Stone Pillars high with a ceiling on top. Lure the Rex to it while riding a flying mount, then land on your tower and shoot tranquilizers at it.
  • Find a Rex that spawned near a cliff. Quite a lot of Rexes spawn in the cove on the southeastern shores, sometimes 4 at a time. Stand on top of the cliff and shoot Tranq Arrows at its head - it will usually stand still while trying to reach you. This method makes it relatively easy to tame a Rex solo. You can also aggro the Rex from a distance and steer it to a cliff while riding a fast mount, such as a Raptor.
  • If you can't find a cliff, bring a friend with a Tapejara, Pteranodon, Argentavis or Quetzal. One player flies the mount and carries the other player, which then shoots Tranq Arrows at the head of the Rex. Be careful to not let your mount run out of stamina, or the Rex will most likely kill all three of you when you go down!
  • Bring one or more tanks set to passive. The Rex will usually attack your pet while you can shoot Tranq Arrows at it from a distance.
  • Another strategy is to find an area with large amounts of prey animals, and lure the Rex towards it, then, while it is attacking or eating, shoot tranq arrows or darts at it, avoiding its agro by running towards another prey animal, and repeating the process until the Rex goes down. However, neutral prey, such as Triceratops will continue attacking, which will lower effectiveness, so be prepared to kill the prey as well.
  • Lure a rex into a behemoth gate cage and use your friend's flyer (Don't use pteros, if you try and shoot it will shoot them) to start shooting it down and you got yourself a safe spot :)
  • Ride a raptor oriented for stamina, speed, and enough carry weight. A raptor outruns a Rex so run forward, turn to the side, shoot at its head, then turn and resume running again. Each pause to shoot will allow the raptor to regen stamina while you take the time to line up a good shot. As well using rocks and other terrain features to kite it around help greatly. It will eventually run which is easy to catch on a raptor.
  • Create a taming boat that consists of STONE so the rex won't break it and make the area the rex will be out of stone doorways.(ALSO MAKE SURE TO COVER THE WOOD PART OF THE RAFT) This allows you to shoot it with tranqs and it won't get out. Make a ramp that leads into the trap. Once your taming raft is made and ready park it on the shore close to the rex you want to tame, make sure you're faster than the rex, and agro it up the ramp. Into the trap and run through the gaps in the doorways and tranq away! Alternatively, if you wall off the portion of the raft where you stand to drive, you can drive the still-awake rex to your base and tame it in safety there.
  • Build 3 stone gateways and place a LARGE bear trap in the middle. Lead the rex into the bear trap and place a fourth gateway behind it, effectively trapping it. The gateways will provide a guaranteed way to knock it out as the Rex won’t be able to escape or fight back, assuming you’re a safe enough distance shooting at it. After it is knocked out simply remove the gates and tame normally. The only problem would be if the Rex decides to move around the gate, which would mean you would have to rotate and lead the Rex into it.

Taming Food[edit | edit source]

Rex.png Level 1 Narcoberry Narcotic Bio Toxin Time
Kibble.png Kibble (Pulmonoscorpius Egg) 5 0 0 0 0:16:00
Raw Mutton.png Raw Mutton 10 0 0 0 0:20:00
Cooked Lamb Chop.png Cooked Lamb Chop 18 2 1 1 0:35:58
Raw Prime Meat.png Raw Prime Meat 12 0 0 0 0:24:00
Cooked Prime Meat.png Cooked Prime Meat 24 56 12 6 0:47:57
Raw Prime Fish Meat.png Raw Prime Fish Meat 30 0 0 0 0:30:00
Raw Meat.png Raw Meat 36 164 35 18 1:12:00
Cooked Prime Fish Meat.png Cooked Prime Fish Meat 60 118 25 13 1:01:39
Cooked Meat.png Cooked Meat 72 164 35 18 1:12:00
Raw Fish Meat.png Raw Fish Meat 90 245 52 26 1:30:00
Cooked Fish Meat.png Cooked Fish Meat 180 245 52 26 1:30:00
KO: Wooden Club Hits × 155; Slingshot Hits × 64; Tranquilizer Arrows with a Bow × 18; Tranquilizer Arrows with a Crossbow × 10; Tranquilizer Dart Shots × 8; Shocking Tranquilizer Dart Shots × 4
Torpidity-depletion: 0.73 / s, Time until all torpidity is depleted: 00:35:37
Rex.png Level 30 Narcoberry Narcotic Bio Toxin Time
Kibble.png Kibble (Pulmonoscorpius Egg) 10 0 0 0 0:31:59
Raw Mutton.png Raw Mutton 22 0 0 0 0:44:00
Cooked Lamb Chop.png Cooked Lamb Chop 40 138 31 16 1:19:55
Raw Prime Meat.png Raw Prime Meat 27 0 0 0 0:54:00
Cooked Prime Meat.png Cooked Prime Meat 53 307 69 35 1:45:54
Raw Prime Fish Meat.png Raw Prime Fish Meat 67 54 12 6 1:07:00
Raw Meat.png Raw Meat 80 659 148 74 2:40:00
Cooked Prime Fish Meat.png Cooked Prime Fish Meat 133 507 114 57 2:16:39
Cooked Meat.png Cooked Meat 159 652 146 73 2:39:00
Raw Fish Meat.png Raw Fish Meat 199 912 205 103 3:19:00
Cooked Fish Meat.png Cooked Fish Meat 398 912 205 103 3:19:00
KO: Wooden Club Hits × 425; Slingshot Hits × 174; Tranquilizer Arrows with a Bow × 48; Tranquilizer Arrows with a Crossbow × 27; Tranquilizer Dart Shots × 20; Shocking Tranquilizer Dart Shots × 10
Torpidity-depletion: 1.21 / s, Time until all torpidity is depleted: 00:58:46
Rex.png Level 60 Narcoberry Narcotic Bio Toxin Time
Kibble.png Kibble (Pulmonoscorpius Egg) 16 0 0 0 0:51:11
Raw Mutton.png Raw Mutton 34 0 0 0 1:08:00
Cooked Lamb Chop.png Cooked Lamb Chop 62 381 89 45 2:03:52
Raw Prime Meat.png Raw Prime Meat 42 73 17 9 1:24:00
Cooked Prime Meat.png Cooked Prime Meat 83 704 164 82 2:45:50
Raw Prime Fish Meat.png Raw Prime Fish Meat 104 227 53 27 1:44:00
Raw Meat.png Raw Meat 125 1354 315 158 4:10:00
Cooked Prime Fish Meat.png Cooked Prime Fish Meat 208 1074 250 125 3:33:43
Cooked Meat.png Cooked Meat 249 1346 313 157 4:09:00
Raw Fish Meat.png Raw Fish Meat 312 1833 426 213 5:12:00
Cooked Fish Meat.png Cooked Fish Meat 623 1829 425 213 5:11:30
KO: Wooden Club Hits × 704; Slingshot Hits × 288; Tranquilizer Arrows with a Bow × 79; Tranquilizer Arrows with a Crossbow × 45; Tranquilizer Dart Shots × 32; Shocking Tranquilizer Dart Shots × 16
Torpidity-depletion: 1.58 / s, Time until all torpidity is depleted: 01:14:38
Rex.png Level 90 Narcoberry Narcotic Bio Toxin Time
Kibble.png Kibble (Pulmonoscorpius Egg) 22 0 0 0 1:10:22
Raw Mutton.png Raw Mutton 46 51 13 7 1:32:00
Cooked Lamb Chop.png Cooked Lamb Chop 84 706 169 85 2:47:49
Raw Prime Meat.png Raw Prime Meat 57 241 58 29 1:54:00
Cooked Prime Meat.png Cooked Prime Meat 113 1207 289 145 3:45:46
Raw Prime Fish Meat.png Raw Prime Fish Meat 142 483 116 58 2:22:00
Raw Meat.png Raw Meat 170 2194 525 263 5:40:00
Cooked Prime Fish Meat.png Cooked Prime Fish Meat 283 1768 423 212 4:50:46
Cooked Meat.png Cooked Meat 339 2185 523 262 5:39:00
Raw Fish Meat.png Raw Fish Meat 424 2919 699 350 7:04:00
Cooked Fish Meat.png Cooked Fish Meat 848 2919 699 350 7:04:00
KO: Wooden Club Hits × 983; Slingshot Hits × 402; Tranquilizer Arrows with a Bow × 110; Tranquilizer Arrows with a Crossbow × 63; Tranquilizer Dart Shots × 45; Shocking Tranquilizer Dart Shots × 23
Torpidity-depletion: 1.91 / s, Time until all torpidity is depleted: 01:26:09
Rex.png Level 120 Narcoberry Narcotic Bio Toxin Time
Kibble.png Kibble (Pulmonoscorpius Egg) 27 0 0 0 1:26:21
Raw Mutton.png Raw Mutton 58 196 48 24 1:56:00
Cooked Lamb Chop.png Cooked Lamb Chop 106 1094 268 134 3:31:47
Raw Prime Meat.png Raw Prime Meat 72 458 113 57 2:24:00
Cooked Prime Meat.png Cooked Prime Meat 143 1788 438 219 4:45:42
Raw Prime Fish Meat.png Raw Prime Fish Meat 179 787 193 97 2:59:00
Raw Meat.png Raw Meat 215 3142 770 385 7:10:00
Cooked Prime Fish Meat.png Cooked Prime Fish Meat 358 2558 627 314 6:07:50
Cooked Meat.png Cooked Meat 429 3132 768 384 7:09:00
Raw Fish Meat.png Raw Fish Meat 537 4146 1016 508 8:57:00
Cooked Fish Meat.png Cooked Fish Meat 1073 4141 1015 508 8:56:30
KO: Wooden Club Hits × 1262; Slingshot Hits × 515; Tranquilizer Arrows with a Bow × 141; Tranquilizer Arrows with a Crossbow × 81; Tranquilizer Dart Shots × 58; Shocking Tranquilizer Dart Shots × 29
Torpidity-depletion: 2.21 / s, Time until all torpidity is depleted: 01:35:11
Rex.png Level 150 Narcoberry Narcotic Bio Toxin Time
Kibble.png Kibble (Pulmonoscorpius Egg) 33 30 8 4 1:45:33
Raw Mutton.png Raw Mutton 70 374 94 47 2:20:00
Cooked Lamb Chop.png Cooked Lamb Chop 129 1552 388 194 4:17:43
Raw Prime Meat.png Raw Prime Meat 87 714 179 90 2:54:00
Cooked Prime Meat.png Cooked Prime Meat 173 2431 608 304 5:45:38
Raw Prime Fish Meat.png Raw Prime Fish Meat 217 1144 287 144 3:37:00
Raw Meat.png Raw Meat 260 4175 1044 522 8:40:00
Cooked Prime Fish Meat.png Cooked Prime Fish Meat 433 3424 856 428 7:24:53
Cooked Meat.png Cooked Meat 519 4165 1042 521 8:39:00
Raw Fish Meat.png Raw Fish Meat 649 5466 1367 684 10:49:00
Cooked Fish Meat.png Cooked Fish Meat 1298 5466 1367 684 10:49:00
KO: Wooden Club Hits × 1541; Slingshot Hits × 629; Tranquilizer Arrows with a Bow × 172; Tranquilizer Arrows with a Crossbow × 98; Tranquilizer Dart Shots × 70; Shocking Tranquilizer Dart Shots × 35
Torpidity-depletion: 2.51 / s, Time until all torpidity is depleted: 01:42:38

Note that the values are for optimal cases, always bring extra supplies!
For a level-dependent count of resources needed, try an external taming calculator.

Ingredients for Kibble.png Kibble (Pulmonoscorpius Egg): 1 × Pulmonoscorpius Egg.png Pulmonoscorpius Egg , 1 × Longrass.png Longrass , 1 × Prime Meat Jerky.png Prime Meat Jerky , 2 × Mejoberry.png Mejoberry , 3 × Fiber.png Fiber , 1 × Water.png Water

Combat[edit | edit source]

This section describes how to fight against the Rex.

General[edit | edit source]

The Rex is an imposing threat that is not only durable, but also hits rather hard. Their ability to traverse terrain quite well only helps to cement their position at the top of the food chain. While they are definitely the larger of the dangers in the environment, they are not necessarily the fastest and definitely not the smartest. Using one's wits and finesse will help to avoid the wrath of this iconic dinosaur.

Strategy[edit | edit source]

Player base sprint speed is faster than that of a wild Rex. It is possible to kite the Rex and do damage with ranged weaponry. If you get attacked by a Rex, try to find large rocks to get it stuck, or if you have a flyer nearby, get on that and get above a cliff, and shoot it from the cliff.

An effective strategy is, because of their terrible swimming speed, is to use a raft: drive it far enough away to where you can still shoot it and it doesn’t aggro to anything else, and hop off and shoot it. Continue this process until it is dead. NOTE: when using this strategy, don’t go to far out into the ocean, as you could aggro a Leedsichthys.

An additional note: Following this strategy, if there happens to be some Megalodon for example between a connection from ocean to a river with some deep, they may get aggro against a swimming Rex. Don't know if this is a bug, because a Rex should be ignored from most predators.

If you have access, try hitting it with a Chain Bola fired preferably from a ballista on a platform saddle, then shooting it with a Longneck Rifle; use bullets if you want to kill it, or with Tranq Darts if you want to tame it.

Weaponry[edit | edit source]

Make sure that you have at least a Crossbow or Longneck Rifle. Fabricated weapons such as the Assault Rifle or the Rocket Launcher work best, but would be a waste of resources that would be better for raiding, or defense. Strong dinosaurs can also suffice as effective weaponry to down a Rex.

Dangers[edit | edit source]

Tyrannosaurus has a balanced amount of the primary stats, i.e. damage, health, and speed. The Rex is not to be trifled with, especially in the early game. If a player has low stamina (or is low level), the player could run out of stamina and the Rex could easily catch up. Getting it stuck between trees is useless, as it destroys trees as it walks. They can effectively kill a low-level player in only a few bites and reduce thatch structures to nothing in seconds. Even players in flak armor aren't very safe from a continuous Rex assault.

Also, make sure the Rex is not glowing red. If it is, that's an Alpha Rex!

Weakness[edit | edit source]

When it comes to raw power, Rexes have little weaknesses as they can easily overpower lesser creatures and get over terrain surprisingly well. However, Rexes are not very intelligent (like most other creatures) and tend to aggro to the closest thing in the area aside from other apex predators, so running into a group of Dodos, Parasaurs, or Trikes can give you time to escape. If you need to escape from a wild Rex and other herbivores aren't around, base player sprint speed is higher than that of a wild Rex, so you can outrun one on foot. However, small obstacles in your path can allow it to catch up, as the Rex could easily walk over something a player would have to go around. By doing this, you can also run into a pack of Raptors, Carnos and other creatures that can kill you, so beware of them!

In the event that you can overpower a Rex, it has no additional utilities to effectively defend itself, unlike a Yutyrannus for example. This can make the Rex an easy and bountiful target.

Utility[edit | edit source]

Roles[edit | edit source]

  • Tank: Possessing a huge health pool, the Rex also inflicts greater damage and moves much faster when compared to bulkier tanks such as the Brontosaurus. (Level up Health and Melee Damage)
  • Hunter: One of the best creatures in the game at harvesting meat and other resources from carcasses, the Rex has little to fear in the wilds. (Level up Melee Damage and Health)
  • Damage: While still nowhere near that of Giganotosaurus, the Rex's damage output is incredibly high, and its durability is also useful for long skirmishes. (Level up Melee Damage and Health)
  • Transport: Decent speed, effective traversing over rough terrain, and good carry weight make Rexes decent for transporting goods. Although they do not get any weight reductions on resources, very few are dumb enough to challenge the raw power of a Rex convoy. (Level up Weight, Movement Speed, and Stamina)
  • Intimidation Tame: With its high volume of roar and large overpowering appearance, the Tyrannosaurus is by far the best way to ward off anyone who dares attack your mount. Furthermore with its roar ability to cause lower-leveled wild/non-allied dino/survivors to defecate makes it even more intimidating.
  • Raid Boss Tank/DPS: Rexes are among the best creature to use for battles against the bosses such as Broodmother Lysrix and the Megapithecus. Their massive health pool and high damage can allow a horde of them to hold aggro on a boss for a very long time. Coupled with a Yutyrannus providing a courage roar and a few Daeodon providing healing, it's possible for them to take down a boss without requiring guns and ammunition...but you should bring those with you, just in case. (Level mostly Health and some Melee Damage.)

Collectibles[edit | edit source]

Resource Efficiency
Raw Prime Meat.png Raw Prime Meat ★★★★★
Raw Meat.png Raw Meat ★★★★★
Pelt.png Pelt ★★★☆☆
Chitin.png Chitin ★★★☆☆
Keratin.png Keratin ★★★☆☆
Hide.png Hide ★★★☆☆

Roar Right Mousebutton[edit | edit source]

  • Causes non-allies under a certain drag weight to defecate with a small stun/interrupt on creatures both tamed and wild. Does not stun players but causes them to poop.
  • The stun/interrupt will cause affected flyers to be grounded.
  • Victims have a cooldown in order to prevent 'pooplocking'.
  • Does not work on anything above the Rex's level.

Achievement[edit | edit source]

Achievement Rex Rider.jpg
Logo Steam.png
Logo Xbox One.svg
Logo PS4.svg
Rex Rider

Ride a T-Rex.

  • Riding a Rex will award the "Rex Rider" achievement.

Spotlight[edit | edit source]

Notes/Trivia[edit | edit source]

For information pertaining specifically to the real-world Rex, see the relevant Wikipedia article

  • Its full name, Tyrannosaurus dominum, translates to "Lord of the Tyrant Lizards".
  • To call it a T. rex would be scientifically incorrect, considering Tyrannosaurus rex and Tyrannosaurus dominum are two separate species of the same genus. However, the official dossier admits that most people call it by the more popular name.
  • Tyrannosaurus dominum is, on average, much larger than any known Tyrannosaurus rex fossils. To put this in perspective, a regular sized human is about as high as T. rex' knee, while the player character barely reaches the ankle of T. dominum.
  • T-Dominum and T-Rex are both scientifically incorrect spellings of the two dinosaurs. Tyrannosaurus is the genus name, and therefore it's capitalized. dominum and rex are the species' names, and are therefore not capitalized. Because the name Tyrannosaurus is being abbreviated, the correct spelling is T. dominum or T. rex.
  • Rexes will often get themselves seriously injured or even killed by attacking too many herbivores at once. Curiously enough, a player-controlled mounted Rex can easily take on many enemies at once, if it manages to keep all enemies in front of it, near its mouth. Unridden Rexes are unable to employ this strategy, causing them to get surrounded and unable to attack.
  • As of v260, the Rex requires a Behemoth Gateway; it can no longer fit into a smaller gate.
  • Rexes, like other large animals, don't take bonus damage from head shots. Shoot for the body.
  • Riders beware: A sprinting Rex damages anything it steps on. This means knocking down trees, instantly crushing the occasional dodo, and sometimes provoking herd attacks that could actually threaten your mount if you're not ready for it.
  • In the Survivor Profile, the devs misspelled Tyrannosaurus, they instead wrote "Tyranosaurus".
  • T. dominum's meaning is similiar to that of Indominus rex from the movie Jurassic World.
  • The Rex received a major update for TLC Phase 1 on the 10th February 2018 on PC (consoles on the 23rd) with an appearance overhaul, a new ability to stun lower-levelled wild/non-allied dinos and survivors by forcing them to defecate with a roar, and better climbing of rocks and hills.
  • Patch 278.0 removed PaintRegion 3 (former Back), but Patch 278.2 added PaintRegion 4 as new Back, therefore making previously obtained color mutations in those regions inaccessible.

Changelog[edit | edit source]

Patch Changes
173.0 Rex damage buffed from 50 to 80
177.0 Added ability to roar (the first species within the game to receive this ability)
178.0 Rex roar now has a large attenuation range
Unversioned Hotfix Rex damage reduced from 80 to 60
254.0 Rex receives the Tek Rex Saddle
260.0 Rex capsule (hitbox) increased to appropriately fit its size
278.0 TLC Patch 1 Receives a model update, animation update, and some new abilities:
  • Its roar should receive a Cooldown and make non-allies (under a certain dragweight) poop to act as a small stun/interrupt. There will be a cooldown on victims so that they cannot be pooplocked continuously.
  • The roar will not be able to scare anything above its level
  • Roar will cause players to poop but not stun them
  • Rex's ability to climb over small rocks and steeper slopes have been improved.
  • removed PaintRegion 3 (former Back)
278.2 added PaintRegion 4 as new Back

Gallery[edit | edit source]

References[edit | edit source]

Promotional Content