Alpha Rex
Ignore
Alpha Rex Egg & Breeding Calculator
The Alpha Rex reproduces by laying fertilized eggs after mating. Incubation temperature must stay between 32°C and 34°C - use Air Conditioners, Standing Torches, or Dimetrodons to maintain the range. At the correct temperature, the egg hatches in approximately 4 hours and 59 minutes.
Full maturation from baby to adult takes ~3 days and 20 hours (1x rate), progressing over an extremely long period, one of the longest in the game. During the baby phase (0–10%), hand-feed it directly. From 10% onward (juvenile), it can eat from a Feeding Trough.
Offspring inherit parental stats and have a small chance to mutate, gaining +2 levels in a random stat. Use the breeding calculator to plan food requirements, incubation timers, and maturation phases.
Maturation has three phases: Baby (0–10%) lasts ~556 min and requires constant hand-feeding. Juvenile (10–50%) spans ~37h - it can eat from a Trough now. Adolescent (50–100%) takes ~46h - continues eating from troughs, nearly fully grown.
Imprint bonuses are significant: a fully imprinted Alpha Rex gains 30% extra damage and damage resistance with its imprinter mounted. You'll be asked to cuddle, walk, or feed specific kibble at regular intervals during maturation.
Incubation Time
2h 29m 59s
Elapsed Time
2h 18m 54s
Maturation Time Left
43h 58m 53s
Time to Juvenile
2h 18m 53s
Total Food Items
1967
items
Food to Adult
1284
items
Food Per Hour
81
Food Capacity
250
items
Baby Hand Feed For
N/A
4.4% maturation
Cuddle Interval
0s
Imprint Per Cuddle
0%
Max Imprint
0.0%
The raising calculator above shows exactly how much food you need for each maturation phase of the Alpha Rex. Budget ~556 minutes for the Baby phase - this is when hand-feeding or Maewing nursing is mandatory.
Raising multiple Alpha Rex simultaneously? Set the dino count and the calculator scales food requirements automatically. Different food types have different spoil timers - factor that into which food you stockpile.
Raising CalculatorFrom 5% - use slider above to adjustFood per item
50
Stack size
40
Eats at 5%
67.27 food/min
Maturation
46h 17m 46s
| Phase | Duration |  Raw Meat |
|---|---|---|
 BabyNeed this much for 5% to 10% | 2h 18m 53s | 182 |
 JuvenileNeed this much for 10% to 50% | 18h 31m 6s | 1,102 |
 AdolescentNeed this much for 50% to 100% | 23h 8m 53s | 492 |
 Total | 43h 58m 53s | 1,776 |
WeightFeeding Trough
2,400 items(60 slots)
Fits in one load
Tek Trough
4,000 items(100 slots)
Fits in one load
Maewing / Maeguana
300 slots
50% weight reduction on meat & berries
Baby- 4x trough refills needed (food spoils before phase ends)Juvenile- 28x trough refills needed (food spoils before phase ends)Adolescent- 35x trough refills needed (food spoils before phase ends)Spoils in 10m|Trough / Maewing: 40m|
Tek Trough: 16h 40m
During the Baby phase (0-10%), you must hand-feed or use a Maewing to nurse. From Juvenile (10%+), dinos can eat from a Feeding Trough on their own. Use Preserving Salt in troughs to double spoil times.
The Alpha Rex, a carnivore creature in ARK: Survival Ascended, is well-known across multiple maps. It falls within the Ignore classification.
Stamina sits at 420 base, providing good endurance. With 100% base Melee Damage, the Alpha Rex has respectable melee power. With 17,500 base Health, the Alpha Rex is extraordinarily tanky. Weight capacity starts at 500, giving it excellent carrying capacity.
The Alpha Rex is a wild creature that cannot be tamed through conventional methods. It reproduces by laying eggs, which must be incubated between 32°C and 34°C. A wild Alpha Rex is worth 885 base experience when killed. It can be cloned at a Cloning Chamber for 0.87 Element plus 0.01 Element per level.