Build a Zoo Wiki: animals, eggs, conveyors and codes
Build a Zoo is a Roblox zoo tycoon game by Century Farmers, and one of the biggest pet games on the platform, with roughly 532 million visits. Eggs roll past your plot on a conveyor belt. You buy the ones you can afford, hatch them, and every animal you place pays cash per second, around the clock. Stronger conveyors bring rarer eggs and a bigger gold boost, a fishing point opens a second family of eggs, and food and weather can stamp mutations onto animals that multiply what they earn. This section is the eggvalues record of the game: every animal public sources name, every egg, the full conveyor ladder, both mutation systems, and a dated codes list.
No complete Album count for Build a Zoo is published anywhere, and the game's own wiki calls its egg page a work in progress. The 51 animals documented here are the ones public sources name today, and the database grows as more are published.
Build a Zoo animal index
All 51 documented animals with rarity, income and the eggs and pools each one comes from, with arranged estimates labelled as estimates.
Build a Zoo values
Every animal's income value listed: the 16 published rates plus arranged estimates for the rest of the core roster, each one labelled.
Build a Zoo eggs
All 34 named eggs: conveyor eggs, fishing eggs, event eggs and code eggs, with prices and hatch pools where sources publish them.
Build a Zoo conveyors
The full 11 tier conveyor ladder with prices, gold boosts and the new egg each tier adds to the belt.
Build a Zoo mutations
Food and weather mutations up to 12x, the Sandstorm bonus, Halloween rates, and the second conflicting ladder, shown separately.
Build a Zoo income rankings
All 51 animals ranked by cash per second, from Gobbles at $30,978/s down, with published, approximate and estimated figures marked.
Best animals in Build a Zoo
Which animals to chase first, tier by tier across the whole roster, with approximate and estimated figures marked.
Build a Zoo codes
The dated, two source checked list of working codes, with expired codes kept and marked, and the exact redeem steps.
All Build a Zoo guides
Every guide for this game on one shelf.
Getting started
The first session loop: your first eggs, the podium purchases, the fishing unlock and your first conveyor upgrade.
Making money fast
Conveyor upgrades, mutation multipliers and the strongest published earners, in the order to build them.
Build a Zoo FAQ
Trading status, codes, conveyors, mutations, fishing and the events, answered from checked facts.
Top 5 animals by income
| # | Animal | Rarity | Income | From |
|---|---|---|---|---|
| 1 | G Gobbles | Prismatic | $30.98K/s (30,978 $/s) | Thanksgiving 2025 (Turkey Egg) |
| 2 | D Dragon | Prismatic (est.) | Est. $29.8K/s (29,800 $/s) | Core roster |
| 3 | L Leshen | Prismatic | $28.7K/s (28,704 $/s) | Halloween 2025 (Candy Egg) |
| 4 | O Orangutan | Prismatic (est.) | Est. $28.15K/s (28,150 $/s) | Core roster |
| 5 | M Mapleantler | Divine | $25.65K/s (25,654 $/s) | Thanksgiving 2025 (Turkey Egg) |
The two leaders are event animals with exact published rates. The Dragon and Orangutan behind them carry arranged estimates, marked Est., built from the Prismatic conveyor pool they hatch in. Full income rankings
Frequently asked questions
What is Build a Zoo?
Build a Zoo is a Roblox zoo tycoon game by Century Farmers. Eggs roll past on a conveyor belt, you buy and hatch them on your plot, and every animal you place pays cash per second. Better conveyors bring rarer eggs, fishing adds a second set of eggs, and food and weather mutations multiply what your animals earn.
Can you trade animals in Build a Zoo?
No. There is no player trading system and no trade values market for this game, so this section ranks animals by income, the cash per second the game itself pays, instead of by a market price.
What is the best animal in Build a Zoo?
On published income figures, the Thanksgiving event pet Gobbles tops the list at $30,978/s, ahead of the Halloween pet Leshen at $28,704/s. Core animals carry arranged income estimates built from the game's egg and conveyor ladder, and on those estimates the Dragon and Orangutan from the Prismatic conveyor pool sit just behind the two event leaders.
Are there any Build a Zoo codes?
Yes. Build a Zoo runs an active code system, and our codes page lists the working codes at the November 5, 2026 check, each confirmed by at least two independent lists, with expired codes kept and marked.
How these numbers work
Every animal name in this section is named by at least two public sources, or by a dated event guide whose hatch table a second source reproduces. Sixteen of the 51 animals carry published income figures: the 12 event animals carry exact rates from their event guides, and four core animals carry approximate rates from a single money guide, labelled approximate wherever they appear. The other 35 core animals carry arranged estimates, labelled Estimate wherever they appear: because no source publishes core rarities or a core income ladder, each estimate is built from the game's own structure, with the rarity taken from the animal's conveyor pool or its source egg's place on the published egg price ladder, and the income interpolated inside that rarity band between the published anchors, never above a published figure from a higher band. The moment a source publishes a real rate or rarity for one of these animals, the published figure replaces the estimate. Egg prices and conveyor prices are the figures two source lists agree on; where the two lists disagree, both figures are shown and the disagreement is flagged instead of averaged away. The same rule keeps the two conflicting mutation ladders on the mutations page separate. Codes follow the standard two source rule and every status is dated, because Build a Zoo codes carry redemption caps and can expire mid event.
Last updated: November 5, 2026. If you spot a figure that disagrees with your game, tell us on the Tell Us board or in our Discord and we will recheck it.
Facts checked on November 5, 2026 against the Build a Zoo wiki on BloxInformer, the TechWiser egg and conveyor guides, Pro Game Guides event, mutation and beginner guides, and the November 2026 code lists named on the codes page. eggvalues.com is a fan site and is not affiliated with Century Farmers or Roblox Corporation. Build a Zoo has no player trading yet, so this section publishes no trade values: rankings use an income index built from the figures on this page.