ARK: Survival Evolved Wiki
ARK: Survival Evolved Wiki
Rex Egg
Rex Egg.png
Tremendously nourishing by itself, this egg provides exceptional nutritional value in many cooking recipes.
Consumable (values pertain to Humans)
Egg size
Spoils in
Stack size
Decomposes in
Spawn Command
cheat giveitemnum 287 1 0 0
cheat giveitem "Blueprint'/Game/PrimalEarth/Test/PrimalItemConsumable_Egg_Rex.PrimalItemConsumable_Egg_Rex'" 1 0 0
Variant Fertilized Rex Egg
cheat giveitem "Blueprint'/Game/PrimalEarth/Test/PrimalItemConsumable_Egg_Rex_Fertilized.PrimalItemConsumable_Egg_Rex_Fertilized'" 1 0 0
Variant Fertilized X-Rex Egg
cheat giveitem "Blueprint'/Game/Genesis/Dinos/BiomeVariants/Volcano_Rex/PrimalItemConsumable_Egg_Rex_Fertilized_Volcano.PrimalItemConsumable_Egg_Rex_Fertilized_Volcano'" 1 0 0
Used to craft

The Rex Egg is one of the Eggs in ARK: Survival Evolved.


Rex Eggs are randomly dropped by Rex. They can be eaten or used to make Exceptional Kibble for taming Basilosaurus, Brontosaurus, Giganotosaurus, Karkinos, Managarmr, Mosasaurus, Quetzal, Rex, Spino, Therizinosaur, and Tropeognathus. On ARK: Survival Evolved Mobile Logo Mobile.svg, they can be used to make Kibble (Rex Egg) for taming Plesiosaurus and Quetzals.

After two Rex mate, the resulting egg can be hatched into a baby Rex.

Grabbing an egg in the presence of wild Rex will cause them to become hostile and attack the survivor.


Disambig.png Main article: Incubation

The Rex Egg takes 4h 59m 58.561s to hatch. It must be in the temperature range of 32 to 34 °C / 90 to 93 °F to successfully hatch, otherwise it will start to lose Health. The female Rex needs between 18h and 2d before having the capacity to lay eggs again. The incubation time can be reduced by up to 20% if the egg is placed in an Egg Incubator at the ideal temperature.


A flying mount, such as quetzal, or argentavis, and a quick ascent after retrieving a Rex Egg is a good idea, as even one Rex can prove to be a challenge on foot, let alone any others also offended by stealing the egg as well. If the egg is near a sufficient body of water, an aquatic mount can also provide an effective means of escape, as Rexes are poor swimmers. A well-planned assault or distraction with other players and/or mounts can also make egg retrieval easier, though the risk of losing tamed animals to a Rex is a questionable sacrifice for an egg. A Pteranodon is also an ideal mount to escape with, just make sure it can carry it.

Alternatively, you can tame some female Rexes to easily obtain eggs with no risk, as they will not retaliate if you pick up the eggs A Male Rex can speed up the egg laying process with Mate Boost, and an Oviraptor will also help

Super Fertilized Egg (Mobile)[]

Disambig.png Main article: Super Fertilized Egg (ARK: Survival Evolved Mobile)

Logo Mobile.svg This section is about a feature exclusively available on Mobile

Super Fertilized Rex Eggs are a type of Rex Egg exclusive to ARK: Survival Evolved Mobile.

These Eggs can be obtained after a female Rex with a Carnivore Pheromone applied has laid one. They will hatch quicker than normal Rex Eggs and the baby Rex will have better stats when it has hatched.

They can also be used to craft Super Kibble (Rex Egg), which will tame Creatures faster and with more taming effectiveness.