Bronto
CosmicBronto's listing, pool, rarity, and any shown income are independent-reference data, not a developer-published stat sheet. The primary reference recorded for this pet supports the documented fields; the official Roblox game page confirms the broader loop of stealing eggs, hatching pets, earning money, training Speed, and discovering mutations.
Hatches from
Source egg.
Quick stats
Base income and availability.
This species' model weight for the game's size/income scaling — each individual pet's weight can be higher or lower.
Bronto income calculator
Live calculator for Bronto.
Base income: $1.5M/s · Cosmic · Biome: Prehistoric
Enter the pet's displayed weight, not the egg's weight. Reference weight: 35000 kg. Leave empty to compare at reference size.
The species’ model weight used by the game’s size/income scaling — not your pet’s actual weight. Read-only from the dataset.
| Window | Total earned |
|---|---|
| 10 minutes | $900M |
| 30 minutes | $2.7B |
| 1 hour | $5.4B |
| 8 hours | $43.2B |
| 24 hours | $129.6B |
Prefer the standalone tool? Open Bronto in the full Pet Income Calculator.
Income table
One copy at reference size with the documented mutation scalars; bonuses add above ×1 rather than multiplying.
| Variant | Per second | Per minute | Per hour | Per day |
|---|---|---|---|---|
| Base | $1.5M | $90M | $5.4B | $129.6B |
| Silver ×1.25 | $1.88M | $112.5M | $6.75B | $162B |
| Golden ×2 | $3M | $180M | $10.8B | $259.2B |
| Rainbow ×5 | $7.5M | $450M | $27B | $648B |
| Golden ×2 + Rainbow ×5 | $9M | $540M | $32.4B | $777.6B |
How to get
Where this pet comes from.
Hatch Bronto Egg in the Prehistoric biome — you need 17,000,000 Speed to enter (train on your treadmill).
Eggs spawn at biome nests and reset every in-game night (4:30). Larger, more exotic egg variants have better odds at rare pets. Watch out for the T-Rex guarding the area.
Egg drops
Other pets hatched by Prehistoric Nest Egg (the Prehistoric nest pool).
| Pet | Rarity | Income |
|---|---|---|
| Dodo | Rare | $280/s |
| Pterodactyl | Legendary | $22K/s |
| Ankylosaurus | Mythic | $120K/s |
| Bronto | Cosmic | $1.5M/s |
| Triceratops | Cosmic | $1.2M/s |
| Mosasaurus | Eternal | $180M/s |
| Tralaledon | Secret | $32M/s |
| T-Rex | Secret | $25M/s |
Exact drop rates are not published for any Steal An Egg egg — see the egg explorer.
Related
FAQ
How much income does Bronto give in Steal An Egg?
Bronto's documented base rate is $1.5M per second. Applying the documented mutation scalars gives $3M/s for Golden, $7.5M/s for Rainbow, and $9M/s for Golden + Rainbow (mutation bonuses add above the base ×1 rather than multiplying); those scalars are not developer-published values.
How do you get Bronto?
Hatch Bronto Egg in the Prehistoric biome (requires 17,000,000 Speed). Eggs spawn at nests and reset every in-game night (4.5 minutes).
What rarity is Bronto?
Bronto is Cosmic.
How do mutations affect Bronto's income?
Mutations stack additively on top of Bronto's documented base rate: Mutation Factor = 1 + Σ(Scalar − 1), so Golden + Rainbow gives ×6, not ×10. The pet's weight adds a nonlinear size factor on top: scale = ∛(pet weight ÷ 35000 kg), the species' documented reference weight. The official game page confirms mutations exist, but this site has no developer-published multiplier table, so treat every scalar as a sourced estimate rather than an official guarantee.
Is Bronto currently obtainable?
Bronto is marked obtainable in the current data snapshot. Availability can change with game events, so check the listed biome or egg pool in-game before farming.