Steal an Egg · Pet
Pterodactyl
Pterodactyl is a Legendary pet in Steal an Egg that earns a base $22K/s. It hatches from the Pterodactyl Egg, stolen from the nests of the Prehistoric biome.
EggPterodactyl EggPet stats
Base income
$22K/s
Base weight
180 kg
Egg
Pterodactyl Egg
Grow time
3m
Speed reward
+270K
Cash reward
$2.2M
Source
Prehistoric
Biome nest
Rarity
Legendary
Where to get Pterodactyl
Steal the Pterodactyl Egg from the nests of the Prehistoric biome, carry it back to your pen and let it hatch.
- Speed required
- 18M
- Guardian
- T-Rex
The guardian sleeps next to the nest; the faster you are, the easier it is to outrun it. Bigger eggs are worth more but slow you down. Eggs & guardians
Estimate based on the wiki formula
Pterodactyl income with mutations and size
| Mutation | 1× weight180 kg | 10× weight1,800 kg | 100× weight18,000 kg | 200× weight36,000 kg |
|---|---|---|---|---|
| No mutation×1 | $22K/s | $91K/s | $376K/s | $521K/s |
| Rainbow×3.5 | $77K/s | $319K/s | $1.32M/s | $1.82M/s |
| Parasite×3 | $66K/s | $273K/s | $1.13M/s | $1.56M/s |
| Fractured×2.75 | $60.5K/s | $250K/s | $1.04M/s | $1.43M/s |
| Scrambled×2.75 | $60.5K/s | $250K/s | $1.04M/s | $1.43M/s |
| Golden×2.5 | $55K/s | $228K/s | $941K/s | $1.3M/s |
| Spirit Bloom×2.5 | $55K/s | $228K/s | $941K/s | $1.3M/s |
| Bloom×1.25 | $27.5K/s | $114K/s | $471K/s | $652K/s |
| Silver×1.2 | $26.4K/s | $109K/s | $452K/s | $626K/s |
Estimate based on the wiki formula (marked beta there): income = base × (weight ÷ base weight)^(37/60) × mutation, with diminishing returns above 125× the base weight. In-game values can differ. See mutations and the income calculator.
How Pterodactyl compares
Neighbors by income in Prehistoric (2 of 8):
Other Legendary pets
Pterodactyl guide
If you came from Abyss Ocean with a Shark in your pen, the Pterodactyl is the Legendary that replaces it: $22K/s against the Shark's $15K/s, from an egg that grows a minute faster.
Pterodactyl Egg at a glance
- Found in: Prehistoric, the 8th biome
- Speed needed: 18M
- Guardian: T-Rex
- Grow time: 3 minutes
- Reward: +270k Speed and $2.2m
- Base weight: 180 kg
Three minutes is the second-shortest timer in Prehistoric after the Dodo, and the +270k Speed reward is slightly higher than the Dodo's +240k. If you want a quick Speed egg that also earns real income, the Pterodactyl does both reasonably well.
Income in context
In its own zone it is 7th of 8, a long way below the Ankylosaurus ($120K/s). Among Legendary pets it ranks 8th of 21, and 149 of the 198 pets earn more overall.
How far mutations push it
Using the wiki's documented formula (the wiki labels its calculator beta), a Pterodactyl could reach:
- Golden: about $55K/s
- Rainbow: about $77K/s
- 10× base weight: about $91K/s
- 100× base weight: about $376K/s
- 200× base weight: about $521K/s
- Rainbow with 100× weight: about $1.32M/s
A large, Rainbow Pterodactyl would outearn an unmutated Ankylosaurus by a wide margin, so weight rolls on this egg are worth keeping.
Sacrifices and Laboratory
It is an Easy-tier requirement for the Riftbeasts and Shattered Rift sacrifices, and the Laboratory's Biohazard banner lists it as the Legendary pet of the Prehistoric egg.
Data sourced from the Steal an Egg Wiki (CC BY-SA) and processed automatically; last synced 2026-10-11.