R-Brontosaurus
Variant
R-Brontosaurus Egg & Breeding Calculator
The R-Brontosaurus reproduces by laying fertilized eggs after mating. Incubation temperature must stay between 28°C and 31°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.
The baby R-Brontosaurus takes approximately 3 days and 20 hours to fully mature at default rates - over many real-world days, demanding serious time investment. During the baby phase (0–10%), hand-feed it directly. From 10% onward (juvenile), it can eat from a Feeding Trough.
Mutations can add +2 levels to any stat and change colors. Stacking mutations across generations is the key to min-maxed breeding lines. 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 R-Brontosaurus 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
4h 59m 58s
Elapsed Time
4h 37m 47s
Maturation Time Left
87h 57m 46s
Time to Juvenile
4h 37m 47s
Total Food Items
13118
items
Food to Adult
8559
items
Food Per Hour
270
Food Capacity
800
items
Baby Hand Feed For
1h 7m 19s
6.2% maturation
Cuddle Interval
0s
Imprint Per Cuddle
0%
Max Imprint
0.0%
Planning a mass raise? The R-Brontosaurus raising calculator breaks down food needs per phase so nothing goes to waste. Expect ~556 minutes of active care during the Baby phase before it graduates to trough-feeding as a Juvenile.
Adjust the dino count to calculate food for multiple R-Brontosaurus babies at once - essential for batch breeding operations. Match your food choice to your play schedule - longer spoil timers mean less babysitting.
Raising CalculatorFrom 5% - use slider above to adjust
Food per item
30
Stack size
100
Eats at 5%
224.3 food/min
Maturation
92h 35m 33s
| Phase | Duration |  Mejoberry |
|---|---|---|
 BabyNeed this much for 5% to 10% | 4h 37m 46s | 2,023 |
 JuvenileNeed this much for 10% to 50% | 37h 2m 13s | 12,243 |
 AdolescentNeed this much for 50% to 100% | 46h 17m 46s | 5,466 |
 Total | 87h 57m 46s | 19,732 |
WeightFeeding Trough
6,000 items(60 slots)
Need 4 full loads
Tek Trough
10,000 items(100 slots)
Need 2 full loads
Maewing / Maeguana
300 slots
50% weight reduction on meat & berries
Baby- 7x trough refills needed (food spoils before phase ends)Juvenile- 56x trough refills needed (food spoils before phase ends)Adolescent- 70x 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 R-Brontosaurus is a tamable, herbivore creature in ARK: Survival Ascended. Classified under the Variant group.
Starting at 2,209 Health, it's a proper tank. Melee starts at 105% - decent hitting power that scales with level-ups. Stamina sits at 240 base, providing moderate endurance. It carries 1600 base Weight - an enormous weight pool.
The R-Brontosaurus is a knockout tame: apply enough torpor to knock it out, then place food in its inventory. For best results, use Exceptional Kibble - it gives the highest taming efficiency.
Once tamed, the R-Brontosaurus pulls double duty as both a capable resource harvester and pack animal. Breeding produces fertilized eggs that hatch within a 28°C–31°C temperature window. Killing a wild R-Brontosaurus yields 22 base XP. It can be cloned at a Cloning Chamber for 0.79 Element plus 0.01 Element per level.