Pets are the entire economy in Steal An Egg. Every egg you carry back to your base hatches into a creature that prints money every second, and that passive income is what pays for treadmill upgrades, pen expansions, and the speed you need to survive the next zone. Knowing which pets exist in which biome, and what each one earns, tells you exactly where your next run should go.
Quick answer: There are 78 pets in total across the game’s biomes, and the highest earners currently confirmed in the standard index are Bronto (Cosmic, Prehistoric, $1.5M/s) and Cerberus (Secret, Volcano, $8M/s). Judge every pet by its cash per second, not by its rarity color.
How pet income works in Steal An Egg
Each hatched pet sits in your pen and generates a fixed amount of money per second. Those rates stack, so the practical limit on your income is pen space rather than luck. Once your slots fill up, adding a new pet only helps if it out-earns something you already have.
Rarity tiers run Common, Uncommon, Rare, Epic, Legendary, Mythic, Cosmic, and Secret, with Eternal and Divine labels also present at the top end of the game. Rarity roughly tracks income, but not across biomes. A Rare from the Abyss Ocean earns $220 per second, while a Legendary from the Forest earns $1.8K per second and a Legendary from the Volcano earns $11K per second. The biome you pulled it from matters as much as the color on the tag.
Note: The game is updated frequently, and new eggs, sizes, and mutations get added regularly. If a value in your server differs from what you see written down anywhere, trust the number displayed in your own pet index.
Forest and Lake pets
These are the starter biomes. Nothing here is worth keeping long-term, but the Fox and Brr Brr Patapim carry you far enough to fund your first meaningful treadmill upgrades.
| Pet | Rarity | Biome | Income/sec |
|---|---|---|---|
| Chicken | Common | Forest | $1 |
| Dog | Common | Forest | $2 |
| Bird | Uncommon | Forest | $8 |
| Owl | Rare | Forest | $35 |
| Raccoon | Rare | Forest | $45 |
| Fox | Epic | Forest | $180 |
| Brr Brr Patapim | Legendary | Forest | $1.8K |
| Frog | Common | Lake | $3 |
| Catfish | Uncommon | Lake | $12 |
| Turtle | Rare | Lake | $60 |
| Trulimero Trulicina | Epic | Lake | $260 |
Desert and Jungle pets
The Desert only has three confirmed entries, and the gap between them is enormous. Sand Spider at $16K per second is worth more than every other Desert and Forest pet combined. The Jungle is the first biome that offers a full spread from Rare up to Mythic, and it is where most players first break past six-figure income.
| Pet | Rarity | Biome | Income/sec |
|---|---|---|---|
| Jerboa | Common | Desert | $6 |
| Camel | Rare | Desert | $75 |
| Sand Spider | Mythic | Desert | $16K |
| Chimpanzee | Rare | Jungle | $90 |
| Toucan | Rare | Jungle | $110 |
| Crocodile | Epic | Jungle | $420 |
| Gorilla | Legendary | Jungle | $4.8K |
| Orangutini Ananassini | Legendary | Jungle | $5.5K |
| Spider | Mythic | Jungle | $22K |
Snow and Volcano pets
Snow introduces the first Cosmic pet outside of the late game. King Mammoth pays $400K per second, roughly ten times what Mammoth earns and nearly sixty times the Polar Bear. If a King Mammoth egg spawns and you can survive the return trip, drop whatever else you were doing.
Volcano is where the Secret tier appears. Cerberus sits at $8M per second, which is more than every Snow, Jungle, Desert, Forest, and Lake pet added together several times over. It is the single most valuable standard-index pet outside the Cosmic and Eternal ranges.
| Pet | Rarity | Biome | Income/sec |
|---|---|---|---|
| Walrus | Epic | Snow | $600 |
| Polar Bear | Legendary | Snow | $7K |
| Sabertooth Tiger | Mythic | Snow | $35K |
| Mammoth | Mythic | Snow | $42K |
| King Mammoth | Cosmic | Snow | $400K |
| Lava Frog | Epic | Volcano | $850 |
| Flaming Bull | Legendary | Volcano | $9.5K |
| Lava Iguana | Legendary | Volcano | $11K |
| Chillin Chilli | Mythic | Volcano | $55K |
| Cerberus | Secret | Volcano | $8M |
Abyss Ocean and Prehistoric pets
The Abyss Ocean has two Cosmic entries, which makes it unusually generous at the top end. Beluga Whale edges out Whale Shark at $850K per second against $700K. Prehistoric only has two confirmed pets, but Bronto’s $1.5M per second makes it the strongest non-Secret earner in the standard index.
| Pet | Rarity | Biome | Income/sec |
|---|---|---|---|
| Parrotfish | Rare | Abyss Ocean | $220 |
| Swordfish | Epic | Abyss Ocean | $1.1K |
| Shark | Legendary | Abyss Ocean | $15K |
| Orca | Mythic | Abyss Ocean | $80K |
| Whale Shark | Cosmic | Abyss Ocean | $700K |
| Beluga Whale | Cosmic | Abyss Ocean | $850K |
| Ankylosaurus | Mythic | Prehistoric | $120K |
| Bronto | Cosmic | Prehistoric | $1.5M |
Secret and Eternal pets beyond the standard index
Above the biome tables sit Secret and Eternal pets that spawn as announced, time-limited eggs rather than as regular biome drops. When one appears, a server-wide alert names the pet and the zone. These are the only pets that push income into the hundreds of millions per second.
Confirmed high-end entries include the Cosmic Skeleton Boss, an Eternal Mosasaurus that spawns in Prehistoric, the Secret T-Rex, Golden Phoenix, Secret Tralaledon, and Eternal dragon variants covering Lunar, Lava, and Ice. Their listed values move around with size and mutation rolls, so two copies of the same pet will not always earn the same amount.
Rarity badges give a sense of how uncommon these are. Roughly 7.2 percent of players have hatched a Secret, and about 2.9 percent have hatched an Eternal.
How to confirm a pet was added to your index
Why a pet never gets added
There are only a handful of reasons an egg fails to register, and none of them are bugs.
| Problem | What is happening |
|---|---|
| Caught before reaching base | The egg is lost entirely. Nothing is recorded. |
| Slowed the instant you pick up | The egg is heavier than your current speed supports. |
| Trapped near the safe zone | Another player placed traps on the return path. |
| Egg already taken | The nest was looted by someone else on that server. |
| Pen is full | Sell or clear pets before hatching anything new. |
Where you get caught tells you which of these applies. Getting stopped close to your own base usually means you are slightly short on speed. Getting stopped near the halfway point means the zone is out of reach and treadmill time is the fix.
The index is still filling out as new content lands, and the developer ships updates often enough that the top tiers shift regularly. A new zone is on the way, so expect the ceiling on pet income to move again. Until then, the fastest route through the game is picking the highest-earning pet you can reliably deliver and letting that income buy the speed for the next tier up.
