Pets are one of the biggest income multipliers in Build A Ring Farm, and they all come from one place: eggs. Understanding the egg tiers — what they cost, what they hatch, and which are worth opening — saves you from wasting cash on the wrong ones. This guide covers the whole egg and pet system. For which pets to actually chase once you hatch them, see the best pets tier list.
How the Egg Shop works
Eggs are bought from the Egg Shop, found on the right side of the map. Each egg is a gacha-style pull: you pay for the egg, hatch it, and receive a random pet from that egg’s pool, weighted by rarity. Higher-tier eggs cost more but contain stronger pets, so as your farm income grows you graduate to better eggs. You can carry and hatch multiple eggs, and you’ll naturally accumulate duplicate pets — which, as you’ll see, is actually useful.
The egg tiers
Eggs scale in price and pet quality. While exact contents shift with updates, the general ladder runs:
- Common Egg (~$25M) — your first egg, home to starter pets like Dog, Cat, Bunny and the all-important Capybara.
- Uncommon / Rare Eggs — mid-tier pets such as Fox, Raccoon and stronger companions with better earnings boosts.
- Epic Egg — where the Mammoth line and other strong value pets appear, a key target for free-to-play players.
- Legendary / higher eggs — home to the S-tier pets like T-Rex, Kitsune, Hydra and Velociraptor.
- Robux pet packs — guarantee specific high-tier pets, including the Update 4 Starfall Griffin, without gambling on hatches.
Match the egg you’re opening to your income: there’s no point dumping cash into Common Eggs once you can afford Epic ones.
How to get pets faster
A few ways to speed up your pet collection:
- Climb egg tiers as income allows rather than spamming the cheapest egg.
- Hatch in bulk when you can — more pulls means more chances at a rare pet.
- Use Robux packs if you want a guaranteed S-tier pet without the grind; according to Pro Game Guides, a guaranteed strong pet gives lasting value since it boosts every harvest afterward.
- Redeem codes for cash and resources that indirectly fund more egg purchases.
Pet levels and slots
Every pet levels up to 50, with its earnings boost and ability trigger rate rising as it climbs. You can equip a limited number of pets at once, with extra slots available via Robux, and you can place pets across different floors of your farm. Crucially, duplicates are allowed — so hatching three T-Rex pets and equipping all of them to spread their mutation-chance boost farm-wide is a legitimate endgame strategy. Focus your pet treats on levelling your main pets rather than spreading them thin.
Which pets to prioritise from eggs
When you hatch, here’s what you’re hoping for at each stage:
- Early: Capybara, for the Seed Luck that speeds up your seed rolls — see the Capybara pet guide.
- Mid: the Mammoth line and other mutation-upgrade or strong-earnings pets from the Epic Egg.
- Late: T-Rex, Kitsune, Hydra, Velociraptor and the Starfall Griffin — the S-tier companions that define a top farm.
Hatch a pet you don’t need? It’s not wasted — it can be a duplicate for stacking, or pet-treat fodder depending on the system.
Don’t over-invest early
The most common egg mistake is sinking too much cash into eggs before your farm can use the pets. A strong pet multiplies your earnings — but only if your seeds, rings and Saw are already producing. Early on, a single Capybara from a Common Egg is plenty; pour the rest of your cash into upgrades and seeds. Once your income is solid, then invest seriously in higher eggs.
Eggs as part of your income engine
Think of eggs as the fourth lever alongside seeds, rings and mutations. The right pet, levelled and equipped, quietly lifts every harvest — and mutation-upgrade pets even reduce how much you need to spend on sprays. Build your base loop first, climb egg tiers as your income grows, and stack duplicates of your best pet in the late game. For the full picture of how pets fit your earnings, tie this back to how to make money fast.