Rex
DMG · 21 maps
Overview
The Rex is a large carnivore and a powerful damage-dealer in combat. Its devastating Bite attack and ability to stun enemies with a Roar make it a feared predator on the battlefield. It can be airlifted by Tusoteuthis for rapid deployment behind enemy lines or to bypass difficult terrain.
Players typically tame the Rex for base raiding, boss fights, and as a frontline combat mount due to its high damage and crowd control potential.
Spawn Locations
21 mapsThe Rex spawns commonly across a variety of biomes including Caves, Chalk Hills, Dark Zones, Grasslands, Mountains, Snow regions, Volcanoes, and Wastelands. It appears on 21 ARK maps, making it widely accessible. The green zones on the spawn map indicate the highest density of Rex spawns.
Each shape is a real spawn volume. Click for exact chance and zone info.
Tame the Rex using the knockout method. Use Exceptional Kibble for the fastest taming. Raw Mutton also works if you lack kibble. Immobilize it with a Chain Bola, Bear Trap, or Large Bear Trap.
Use ranged weapons from the Bow, Crossbow, or Compound Bow with Tranq Arrows to knock it out. About 17 Exceptional Kibble are needed. The tame takes around 58 minutes. Use the calculator below for your settings.
| Food | Qty | Time | Effectiveness |
|---|---|---|---|
 Exceptional KibbleBest | 9 | 30:42 | 74 Lvl (224) |
 Raw Mutton | 18 | 36:01 | 73 Lvl (223) |
 Raw Prime Meat | 22 | 44:01 | 73 Lvl (223) |
 Cooked Lamb Chop | 33 | 1:05:56 | 71 Lvl (221) |
 Raw Meat | 65 | 2:10:01 | 62 Lvl (212) |
| +6 more in calculator→ | |||
Drops & Harvest Resources
Killing a Rex yields Tyrannosaurus Arm, Rex Bone Helmet, Hide, Raw Meat, and Raw Prime Meat. The Hatchet yields the most Hide, while the Pick is best for Raw Meat and Raw Prime Meat.
| Resource |  Pick |  Hatchet |
|---|---|---|
| 40%~21~17 hits | 60%~32~13 hits | |
| 60%~24~17 hits | 40%~16~13 hits | |
| 3%~1~17 hits | 2%~1~13 hits | |
| - | - | |
Rex Bone HelmetDrop | - | - |
Estimates based on game-extracted data (weights, quantities, harvest multipliers, damage type chains). Each harvest event independently rolls each resource - higher weight = higher drop chance. Actual yields vary with RNG.
Damage Resistances
The Rex takes +400% damage from spike walls, making them extremely effective in defensive setups. It also takes +120% damage from general damage sources and +55% from metal melee attacks. Conversely, it has a -100% resistance to mining drill harvesting, meaning it cannot be damaged by that mechanic. It resists ranged turret attacks and projectile-based melee by 50%. Level Health and Melee Damage.
Kill XP
Wild Kill (1.25×)30 base × 15.9 level × 4 × 1.25× wild kill × 1× server
Server Settings(Game.ini)
Official servers use non-1× defaults; the values above already reflect official rates.
Saddle Crafting XP
Base × 1× quality × 4 × 1× server
| Stat | Base (Lv.1) | Wild +/Lv | Tamed +/Lv |
|---|---|---|---|
 Health | 1100.0 | +220.00 | +4.00% |
 Stamina | 420.0 | +42.00 | +2.00% |
 Torpidity | 1550.0 | +93.00 | +0.00% |
 Oxygen | 150.0 | +15.00 | +2.00% |
 Food | 3000.0 | +300.00 | +2.00% |
 Weight | 500.0 | +10.00 | +0.80% |
 Melee Damage Multiplier | 100.0% | +5.00% | +10.00% |
 Speed Multiplier | 100.0% | +0.00% | +1.00% |
Hitbox Multipliers
The head takes 1.5× damage, making headshots effective for faster knockouts. Target the jaw area during taming attempts for maximum efficiency.
Can Damage
The Rex can damage Thatch and Wood structures. Build at least in Stone to resist its attacks.
Thatch
Wood
Stone
Metal
Tek| Attack | Base | Thatch | Wood | Stone | Metal | Tek |
|---|---|---|---|---|---|---|
| BiteCarnivore Rex | 62 | 341.0 | 186.0 | — | — | — |
| Bite (AI)Carnivore Rex | 62 | 341.0 | 186.0 | — | — | — |
Numbers reflect base melee at level 1, 100% TE, no imprint. The damage calculator lets you scale by melee %, server multipliers, and pick a specific structure for exact hit counts.
Tools & Guides
Rex Tips & Tricks
The Roar ability stuns enemies within a 75-degree cone up to 35m away. Stun duration lasts 4 seconds.
After using Roar, the Rex enters a 6-minute cooldown lockout, preventing another Roar for 6 minutes.
The Roar ability has a 10-second cooldown between uses under normal conditions.
The Rex can be stunned by creatures with a weight limit below 200.
This page details the Rex's stats, taming requirements, breeding conditions, harvest yields, and combat abilities. For precise calculations, refer to the taming calculator, breeding calculator, and spawn map below.