catch a monster breeding: Step-by-Step Nursery Guide - Guide

catch a monster breeding: Step-by-Step Nursery Guide

Learn how catch a monster breeding works, including parent requirements, rank odds, Genesis Fruit, traits, timers, and efficient nursery strategies.

2026-08-21
catch a monster Wiki Team
Quick Guide
  • catch a monster breeding uses two eligible opposite-gender pets at rank S or higher.
  • The Nursery creates a new offspring, so your parent pets remain available for battles.
  • SS plus SS currently previews a 40% SS chance and a 60% S chance.
  • Genesis Fruit is required for a breed and can be purchased through limited shops.
  • Traits and mutations may transfer, improve, or appear as new inherited results.

catch a monster breeding Basics

catch a monster breeding takes place in the Nursery, a dedicated area that replaced the former event area near the tree. The system is designed to produce a new pet rather than consume either parent, allowing you to continue using both original monsters for combat.

The most reliable eligibility rule is to select two opposite-gender parents with a rank of S or higher. The available breed combinations and their expected rank outcomes can be previewed before you confirm the process.

Video Highlights:

  • Locate the Nursery and select two eligible parent pets.
  • Preview rank, mutation, and trait possibilities before breeding.
  • Use Genesis Fruit and account for the breeding timer.
  • Inspect the offspring’s status, skills, mutations, and traits after hatching.

The public CAM/HUB Breeding Simulator is useful for checking the currently documented rank combinations before spending a breeding resource. Treat modeled outcomes separately from confirmed previews, especially for lower-rank pairings.

RequirementCurrent informationPractical meaning
Parent count2 petsSelect both parents before previewing results
GenderOpposite gendersSame-gender combinations may not qualify
Minimum rankS or higherLower-rank pets are not listed as standard eligible parents
Parent safetyParents remain usableBreeding creates a separate offspring
ResourceGenesis FruitKeep one available before confirming
Daily limit1 breed per dayPlan important attempts instead of breeding randomly

Parent Quality

Use high-rank parents with useful mutations, passives, or genetic bonuses. Better parents give you more valuable preview possibilities.

New Offspring

The breed produces a separate pet. Your selected parents are not removed and can still be used in battles.

Preview First

Check the expected rank and mutation-transfer information before confirming, then decide whether the resource cost is worthwhile.

Breeding Priority

Do not automatically breed your strongest combat pair. First identify which parent has the mutation, passive, or trait you most want to preserve.

Step-by-Step Nursery Process

Use the following process whenever you want to start a controlled breeding attempt. The most important decisions happen before pressing the breed button, because the preview helps you compare possible rank and inherited outcomes.

1

Enter the Nursery

Travel to the Nursery near the tree in the former event area. Open the breeding interface and confirm that the daily breeding attempt is available.

2

Choose Parent A

Select an S-rank or SS-rank pet with a trait, mutation, passive, or genetic potential worth passing into a new offspring.

3

Choose Parent B

Select a qualifying opposite-gender parent. Favor a complementary rank or a valuable inherited feature rather than choosing only by appearance.

4

Review the Preview

Inspect the expected rank results, mutation-transfer odds, stat bonuses, and inheritable-trait possibilities. Do not assume every listed possibility is guaranteed.

5

Confirm and Hatch

Spend the required Genesis Fruit, wait through the breeding timer, and hatch the resulting egg. Then inspect the offspring’s complete status panel.

The breeding timer has been observed at approximately four hours. If the game offers an acceleration option, decide whether the result is important enough to justify using premium currency. Waiting is usually the safer choice when you are testing the system or working with ordinary parents.

Process stageWhat to verifyCommon mistake
Nursery entryDaily attempt is availableOpening the menu without checking the limit
Parent selectionRank, gender, mutation, passiveChoosing parents only for their visual design
PreviewRank odds and inherited featuresTreating possible results as guaranteed
ConfirmationGenesis Fruit and timerSpending the resource before reviewing odds
HatchingFull status panelChecking only the pet’s name or rank
Unconfirmed Eligibility Details

A newly bred pet may not immediately appear as an eligible parent. Possible explanations include level requirements, cooldown behavior, or interface restrictions, but these details are not confirmed. Check the Nursery again after the offspring has progressed.

Rank Odds, Traits, and Mutations

The preview screen separates several different result categories. Rank determines the broad quality tier of the offspring, while mutations, traits, passives, and genetic potential affect the pet’s more specific value.

The currently documented rank previews are clearest for S and SS parents. The SS plus SS pairing shows a 40% SS chance and a 60% S chance. The SS plus S pairing shows a 20% SS chance and an 80% S chance. The S plus S result is modeled rather than presented as equally confirmed, so use it with caution.

Parent combinationSS chanceS chanceStatus
SS + SS40%60%Confirmed preview
SS + S20%80%Confirmed preview
S + SNot listed as SS40% S / 60% AModeled result

Possible inherited results include:

  • Mutation transfer: A parent mutation may have a chance to appear on the offspring.
  • Genetic potential: The offspring may gain attack or health bonuses.
  • Random attack bonus: A new attack increase may be generated.
  • Random health bonus: A new health increase may be generated.
  • Inheritable trait: The offspring may inherit a special trait or gain a different trait.
  • Passive result: A parent passive may not transfer, so inspect the final pet rather than assuming it carried over.

A trait is shown through the offspring’s status information and a small rainbow-style indicator in the pet interface. Pets without a trait do not display the same trait entry. This makes the final inspection especially important when your goal is trait hunting rather than simply producing another high-rank monster.

Best Parent Pairing

For rank-focused breeding, SS plus SS currently offers the strongest documented SS preview. For trait-focused breeding, pair a high-value mutation or trait with a parent that adds useful genetic potential.

Rank

Measures the broad tier of the offspring. SS results are possible, but the preview still includes lower outcomes.

Mutation

A visible variation may transfer from a parent or appear through the offspring’s result pool.

Trait

Special traits can be inherited or newly generated. Trait-focused attempts require patience and repeated evaluation.

Genetics

Attack and health potential may improve independently, making the final stat panel more important than rank alone.

Genesis Fruit and Resource Planning

Genesis Fruit is the key breeding resource. The current guide information identifies the Spire Shop and Abyss Shop as useful purchase locations, with limited availability in at least one shop. The reported prices are approximately 4,000 in the Spire Shop and 5,000 in the Abyss Shop, while the Spire option has been observed with a weekly purchase limit of five.

Because shop inventory and limits can change, check each location before committing to a breeding plan. Dungeon-related acquisition has also been suggested, but the exact source should be verified in your current game session rather than treated as a fixed farming route.

SourceReported costAvailabilityPlanning note
Spire Shop4,000Up to 5 per week reportedCheck the weekly limit before spending
Abyss Shop5,000Shop inventoryRefreshing may reveal the item again
Dungeon-related rewardsNot confirmedPossible sourceVerify the current reward pool in-game
Breeding attempt1 Genesis Fruit1 daily breedSave resources for strong parent pairs

Nursery Preparation Checklist:

  • Confirm both parents are opposite genders
  • Verify that each parent is rank S or higher
  • Inspect mutations, passives, traits, and genetic potential
  • Collect one Genesis Fruit before opening the final preview
  • Record the offspring result after hatching

A disciplined resource plan uses one attempt at a time. Avoid spending every Genesis Fruit on random pairings, particularly when the parents lack useful mutations or traits. If you are testing an unfamiliar combination, record the preview and result so future attempts become easier to compare.

Resource Tip

Shop refreshes can change what is available. Check the Spire and Abyss shops before assuming that Genesis Fruit is unavailable or that one location is the only source.

Breeding Strategy and Troubleshooting

The most efficient strategy depends on your objective. Players seeking an SS offspring should prioritize the documented SS plus SS preview. Players seeking traits or mutations may accept a lower rank if the parent features are significantly more valuable.

Start by classifying your attempt:

GoalRecommended focusWhat to inspect
Higher rankSS + SS when availableSS and S preview percentages
SS chance with mixed parentsSS + S20% SS and 80% S preview
Mutation huntingParent with desired mutationTransfer possibility and final mutation
Trait huntingParent with a useful traitTrait entry, indicator, and inherited passive
Stat improvementStrong genetic potentialAttack and health bonuses

Use these troubleshooting checks when the interface does not behave as expected:

  1. The parent is missing: Confirm its rank, gender, level, and current breeding status.
  2. A new offspring is unavailable: Reopen the Nursery later and check whether a progression or cooldown requirement applies.
  3. The result lacks a trait: Review the status panel; a mutation alone does not confirm that a trait was inherited.
  4. The result rank is lower than expected: Recheck the preview. Breeding odds describe possible outcomes, not a guaranteed result.
  5. Genesis Fruit is missing: Review the Spire Shop, Abyss Shop, and current event or reward sources.

A useful rule is to judge the offspring in layers: rank first, then mutation, trait, passive, and genetic potential. A lower-rank result may still be worth keeping if it gains a rare or strategically useful feature. Conversely, a high-rank result may need further testing if it lacks the traits your team requires.

Do Not Assume Inheritance

A parent’s mutation, passive, or trait may be listed as a possibility without appearing on the final offspring. Always open the completed pet’s status screen before deciding whether the breed was successful.

Q: What is catch a monster breeding?

It is the Nursery system for creating a new pet from two eligible opposite-gender parents. The selected parents remain available for combat after the attempt.

Q: Which pets can breed in Catch a Monster?

The documented standard requirement is two opposite-gender pets at rank S or higher. Newly bred pets may have additional level or cooldown restrictions that are not fully confirmed.

Q: What are the SS breeding odds?

The documented preview lists SS plus SS at 40% SS and 60% S. SS plus S lists 20% SS and 80% S. These are possible outcomes, not guarantees.

Q: Where can I get Genesis Fruit?

Genesis Fruit has been reported in the Spire Shop and Abyss Shop. The Spire listing has been observed at 4,000 with a weekly limit of five, while the Abyss listing has been reported at 5,000.