The collected sources do not document a Pet Index, its reward flow or its menu location. The official Roblox description does verify the broader loop of hatching eggs to collect rare pets and earning money from pets. Treat any Index screenshots or reward tables as unconfirmed until checked in the current experience.
How to verify a reward
If the live experience presents an Index or discovery reward, record its menu path, button label, reward, pet or area, and observation date. Keep those observations separate from the official description until a second reliable source confirms them.
Turn eggs into income
The official Roblox description confirms the broad loop: hatch eggs, collect rare pets and earn money from pets. The community guide adds the operational step of delivering a stolen egg to the base. It does not verify offline earnings or fixed income values.
Feed the next run
Spend early rewards on the systems that help you complete the next delivery. The official page mentions treadmill and base upgrades, and says treadmill training grants Speed. Do not publish a best-pet or fixed-income ranking until each value has been checked in the current game version.