Steal an Egg · Pet
Radcoon
Radcoon is a Cosmic pet in Steal an Egg that earns a base $2.2M/s. It hatches from the Biohazard Egg (Biohazard Egg).
EggBiohazard EggPet stats
Base income
$2.2M/s
Base weight
25 kg
Egg
Biohazard Egg
Grow time
—
Speed reward
—
Cash reward
—
Source
Biohazard Egg
Special egg
Rarity
Cosmic
Where to get Radcoon
Radcoon hatches from the Biohazard Egg, part of the Biohazard Egg group. According to the wiki, limited eggs like this do not spawn in the regular biome nests: they come from the Store or from special events such as Admin Abuse.
Other pets from the Biohazard Egg
Estimate based on the wiki formula
Radcoon income with mutations and size
| Mutation | 1× weight25 kg | 10× weight250 kg | 100× weight2,500 kg | 200× weight5,000 kg |
|---|---|---|---|---|
| No mutation×1 | $2.2M/s | $9.1M/s | $37.6M/s | $52.1M/s |
| Rainbow×3.5 | $7.7M/s | $31.9M/s | $132M/s | $182M/s |
| Parasite×3 | $6.6M/s | $27.3M/s | $113M/s | $156M/s |
| Fractured×2.75 | $6.05M/s | $25M/s | $104M/s | $143M/s |
| Scrambled×2.75 | $6.05M/s | $25M/s | $104M/s | $143M/s |
| Golden×2.5 | $5.5M/s | $22.8M/s | $94.1M/s | $130M/s |
| Spirit Bloom×2.5 | $5.5M/s | $22.8M/s | $94.1M/s | $130M/s |
| Bloom×1.25 | $2.75M/s | $11.4M/s | $47.1M/s | $65.2M/s |
| Silver×1.2 | $2.64M/s | $10.9M/s | $45.2M/s | $62.6M/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 Radcoon compares
Neighbors by income in Biohazard Egg (2 of 5):
Other Cosmic pets
Radcoon guide
Radcoon earns $2.2M/s, exactly the same as La Vacca Saturno Saturnita, one of the Cosmic-rarity pets that the Biohazard banner in Dr. Scramble's Laboratory asks for. That coincidence frames the whole question of whether this pet is worth chasing.
What the Biohazard banner takes and gives
The Laboratory arrived with Update 6, replacing the Rift Trade-In Machine. Its Biohazard banner draws from Prehistoric, Cosmic and Cherry Blossom eggs and asks for specific pets from them, sorted by rarity. A few of the requested pets with their incomes, from the wiki:
- Dodo (Rare), $280/s
- Pterodactyl (Legendary), $22K/s
- Ankylosaurus (Mythic), $120K/s
- Triceratops and Bronto (Cosmic), $1.2M/s and $1.5M/s
- La Vacca Saturno Saturnita (Cosmic), $2.2M/s
Since Update 6 you can hand in eggs directly, and pity now guarantees the banner's top reward. In practice, most of what you give up earns far less than what the Biohazard Egg can return, and even its second pet, Radcoon, matches the best Cosmic input on that list.
Radcoon in the Biohazard Egg
The egg's five pets: Toxic Rat ($180K/s), Radcoon ($2.2M/s), Toucax ($30M/s), Nuceodile ($500M/s) and Nuclear Mantis ($1.5B/s). Radcoon ranks 16th of 28 Cosmic pets, tied with La Vacca Saturno Saturnita and Dreadclaw, and 104 of 198 pets in the game earn more. The wiki lists no grow time or hatch reward.
Estimates
Base weight is 25 kg. With the formula the wiki documents:
- Golden: about $5.5M/s
- Rainbow: about $7.7M/s
- 100x base weight: about $37.6M/s
- Rainbow at 100x weight: about $132M/s
The Scrambled Mutation sold in the Experiment Shop (x2.75, 10% chance to stick) would put a plain Radcoon around $6.05M/s.
Data sourced from the Steal an Egg Wiki (CC BY-SA) and processed automatically; last synced 2026-10-11.