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Biohazard Egg in Steal an Egg

Biohazard Egg

The Biohazard Egg holds 6 pets in Steal an Egg. Nuclear Mantis makes the most, at $1.5B/s.

Egg Spawns

Toxic Rat, a mythic pet in Steal an EggToxic Rat$180K/sMythic-Radcoon, a cosmic pet in Steal an EggRadcoon$2.2M/sCosmic-Toucax, a cosmic pet in Steal an EggToucax$30M/sCosmic-Hazardhog$500M/sEternal-Nuceodile, a secret pet in Steal an EggNuceodile$500M/sSecret-Nuclear Mantis, an eternal pet in Steal an EggNuclear Mantis$1.5B/sEternal-

Common Questions

How do I get the Biohazard Egg?

We do not have a confirmed way yet.

Which pets are in the Biohazard Egg?

The Biohazard Egg holds Hazardhog, Nuceodile, Nuclear Mantis, Radcoon, Toucax, and Toxic Rat.

Which pet in the Biohazard Egg is the best?

Nuclear Mantis makes the most money, at $1.5B/s at base weight.

Sources

Last checked Oct 31, 2026

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Image: Steal An Egg Wiki (Fandom). Game art by and Collect Rare Pets.