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Planner · User-entered · no Planet Zoo 2 game data imported

Breeding and release tracker

Log pairs, litters and releases; read litter sizes, breeding success and release counts computed from your records.

Which values are verified and which are user-entered is shown on every row. · Checked 2026-11-06

Add a record

Which values are verified: none by default — every number here is user-entered. Add the game build to details when you can, and note the destination exactly as the game shows it.

Computed counts

0Pairings
0Litters
0Births (leading number on litter lines)
0Releases
—Avg litter size
—Release rate

Formulas: avg litter = births ÷ litters · release rate = releases ÷ births (×100). Births come from the leading number on each litter line.

Timeline

No records yet. Log a pairing you observe in your game.

    Save and export

    Saved in this browser.

    Formula, data version and scope

    Breeding and release tracker — formula, data version and scope
    ItemValue
    FormulaLitter average = births ÷ litters · Breeding success = litters ÷ pairings (user-entered pairings) · Release rate = releases ÷ births · Lineage depth = longest recorded parent chain. All counts are arithmetic over user-entered records.
    Data versionUser-entered · no Planet Zoo 2 game data imported
    Source scopeRecords store the game build and the observation date; released-animal destinations are recorded exactly as the game shows them.
    AssumptionsThe user records gene panels exactly as displayed. · “Pairings” is user-defined (e.g., pair placed together). · Destinations are free text from the in-game release panel until records verify the vocabulary.
    UnsupportedNo heritability or breeding-value computation. · No inbreeding coefficient. · No compatibility checks. · No prediction of birth outcomes.
    What do the evidence labels mean?

    Confirmed: Directly supported by an official source captured for this edition, or a statement about the wiki’s own editorial method. Announced: Stated by an official source; the detailed implementation is not yet verified. Observed: First-hand gameplay observation; not recreated or tested by this wiki. Reported: Provided through a brief or secondary channel; not yet independently rechecked against an official source. Inferred: A reasonable reading of an official statement; not stated outright and not guaranteed. Unresolved: No verifiable evidence exists yet. Published as an open question. Outdated: Superseded by a newer statement or from an earlier edition.

    Related guides

    Planet Zoo 2 field guide

    An independent guide to the animals, building tools and zoo systems of Planet Zoo 2.

    Planet Zoo and Planet Zoo 2 belong to their publisher. Unofficial fan resource; this wiki is not affiliated with Frontier Developments.

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