🐑 Natural Reproduction - Autonomous Livestock Husbandry & Ecological Genetics

"Nature does not wait for player intervention to blossom."

In vanilla Minecraft, animals stand frozen in cramped pens, completely helpless until a player right-clicks them with wheat. In real ecosystems, animals graze, form structured herds led by alpha animals, gestate over time, and thrive in rich pastures while suffering severe degradation in overcrowded conditions.

Natural Reproduction transforms Minecraft's passive fauna into a dynamic, living ecosystem. Wild animals autonomously mate when their environmental habitat needs are met, while pastoral farmers are rewarded for spacious pastures, rotational grazing, and careful genetic stewardship.

Part of the Delayed Gratification Collection — mods that reward long-term planning, multi-generational investment, and strategic animal husbandry.

[!IMPORTANT] Dependencies & 1 Jar 1 Version Policy:

• Modern (MC 26.x / 26.1.2 / 26.2 / 26.3+): Requires Fabric API and Dasik Library (v1.8.15+).
• Legacy Anchor (MC 1.20.1 / 1.21.x): Self-contained (only requires Fabric API; Dasik Library is not needed).
• 1 Jar 1 Version Policy: I build 1 dedicated JAR for each Minecraft version. Please download the exact build that matches your Minecraft installation.

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✨ Comprehensive Feature Catalog

🌿 Autonomous Ecosystem Breeding & Food Blocks

Wild animals no longer require manual player hand-feeding to reproduce. When animals are healthy and surrounded by species-appropriate environmental blocks, they autonomously enter love mode:

• Cows, Sheep & Goats: Require nearby grass blocks, tall grass, or hay bales.
• Pigs: Seek mud blocks, farmland crops, or carrots/potatoes.
• Chickens: Require seed crops, hay bales, or grassy turf.
• Wolves & Foxes: Seek biome-specific den blocks (snow/ice for Snowy variants, podzol/spruce for Taigas).
• Frogs & Turtles: Require water bodies, lily pads, sand, or mangrove mud.
• Supports all 27+ vanilla Minecraft animal species!

👑 Herd Social Dynamics & Alpha Leadership

Animals no longer scatter randomly. They form organic pastoral herds:

• Alpha Leader Election: The herd dynamically elects the largest physical animal (by scale genetics) as their Alpha leader.
• Pastoral Flocking: Herd members stay within 5–16 blocks of their leader, grazing together during daylight hours and seeking sheltered pens at night.
• Herd Distress Stampede Panic: If a predator or player attacks any herd member, all nearby animals panic in a synchronized 5-second stampede away from danger!

⏳ Pregnancy Gestation Timers & Prenatal Vitality

No more instant baby pops. Mating initiates a natural pregnancy countdown:

• Autonomous Gestation: Default duration of 24,000 ticks (1 in-game Minecraft Day).
• Prenatal Pasture Vitality: Mothers kept in enriched, spacious pastures during pregnancy bestow Prenatal Vitality onto their offspring (+15% max health, +10% speed, and +10% baseline scale)!

🥚 Dedicated Chicken Reproduction & Fertilized Eggs

Chickens feature an authentic, separate reproduction cycle:

• Autonomous Mating: When chickens breed autonomously, they roll a 50/50 chance to either hatch an immediate baby chick or lay a Fertilized Egg.
• Guaranteed Hatch Rate: Fertilized Eggs have a 100% hatch rate when thrown by players, and a 75% hatch rate when fired from automated dispensers!
• Infertile Regular Eggs: Ordinary unfertilized eggs have a reduced 1/64 miracle hatch chance, isolating egg farms from runaway entity lag.

🛑 Cramped Factory Farm Penalty vs. Spacious Pasture Recovery

Factory farming has realistic consequences:

• Cramped Space Stunting: Confining breeding animals to 1x1 pit holes or tight, overcrowded pens gradually stunts offspring genetics down to 0.10x scale (yielding 0 drops at minimum floor).
• Spacious Pasture Recovery: Moving stunted animals into open, spacious green pastures grants +15% genetic size recovery per generation, gradually restoring their pedigree back to full potential (up to 1.20x scale)!

🧬 Lineage Inbreeding Degradation & Hybrid Vigor

Closed-herd inbreeding carries authentic biological penalties:

• Lineage Tracking: Every animal tracks parental lineage across generations.
• Inbreeding Tiers (T0 to T4): Repeated sibling and parent-offspring mating causes severe genetic collapse. At Tier 3/Tier 4, animals yield Rotten Flesh & Bones instead of prime meat, and Tier 4 animals suffer lethal health decay.
• Hybrid Vigor: Outcrossing unrelated bloodlines grants a +15% scale boost and superior genetic vitality!

🏡 Pasture Enrichment, Rotational Grazing & Shelter

Invest in your pastures to reap rich agricultural rewards:

• Pasture Enrichment: Providing water cauldrons, composters, hay bales, and barn roof shelters grants animals the Well-Nourished state (+25% faster breeding checks, +10% offspring scale, golden sparkle particles).
• Overgrazing Terrain Wear: Overcrowding too many animals on a single pasture causes grass blocks to gradually degrade into dirt and coarse dirt, encouraging rotational grazing.

🌍 Biome Variant Adaptation & Climate Fertility

• Native Biome Fertility: Breeding animals in their native climate biomes (Taigas for Wolves, Deserts for Camels, Swamps for Frogs) grants 2x faster breeding frequency and +15% genetics quality.
• Variant Skin Adaptation: Offspring born in specialized biomes naturally adapt their visual variant skins (e.g. Snowy Wolves, Warm/Cold Frogs, Desert Rabbits).

📏 Physical Scale-Based Harvest Drops

Size directly dictates harvest yields:

• Scaled animal drops dynamically scale centered at 0.95x baseline (100% drops). Heavyweight champions (1.20x scale) yield up to +50% bonus drops, while severely confined runts (0.10x scale) yield 0 drops! Larger livestock reward thoughtful breeding!

🧩 Compatibility & HUD Integrations

• Server-Side Compatible: Works seamlessly on dedicated servers — vanilla clients can connect without installing the mod.
• In-Game GUI: Full YetAnotherConfigLib (YACL v3) and ModMenu configuration screen.
• Data-Driven Genetics: Powered by DasikLibrary API and EntityGeneticsRegistry.

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📊 Quick Reference & Mechanics Matrix

🐾 Species Environmental Habitat Triggers (27 Species)

Species Category	Example Animals	Required Habitat Blocks
Bovines & Equines	Cows, Mooshrooms, Horses, Donkeys, Mules	GRASS_BLOCK, SHORT_GRASS, TALL_GRASS, HAY_BLOCK
Ovine & Caprine	Sheep, Goats, Llamas, Camels	GRASS_BLOCK, SHORT_GRASS, HAY_BLOCK, SAND
Porcines	Pigs, Hoglins	MUD, FARMLAND, CARROTS, POTATOES, CRIMSON_NYLIUM
Avians & Small Fauna	Chickens, Rabbits, Bees	WHEAT_SEEDS, HAY_BLOCK, CARROTS, FLOWERS
Canines & Felines	Wolves, Foxes, Cats, Ocelots	PODZOL, SPRUCE_LEAVES, SNOW_BLOCK, GRASS_BLOCK
Aquatics & Amphibians	Frogs, Turtles, Axolotls	WATER, LILY_PAD, MUD, SAND, SEAGRASS
Nether & Exotic	Striders, Sniffers, Armadillos, Polar Bears	LAVA, WARPED_NYLIUM, MOSS_BLOCK, ICE, PACKED_ICE

🧬 Inbreeding Degradation Matrix

Tier	Generation Status	Genetic Effects	Harvest Drop Penalties
T0	Clean Bloodline / Wild	Full genetic baseline (1.00x scale)	Normal drops
T1	First Inbred Generation	-10% Max HP, -5% Movement Speed	Normal drops
T2	Second Inbred Generation	-20% Max HP, -10% Movement Speed, Stunted Scale	-25% Item Yield
T3	Severe Lineage Inbreeding	-35% Max HP, Genetic Defects, Severe Stunting	Meat turns into Rotten Flesh & Bones
T4	Lethal Lineage Collapse	Lethal Health Decay (1 dmg/sec)	100% Rotten Flesh & Bones Only
HV	Hybrid Vigor (Outcross)	+15% Scale, +20% Max HP, +10% Speed	+25% Bonus Prime Drops

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💻 In-Game Commands

The mod includes a full /naturalreproduction Brigadier command suite with tab-completion (requires permission level 2 / cheat access):

/naturalreproduction help                           - Displays all available commands
/naturalreproduction status                         - Prints active breeding settings and density limits
/naturalreproduction get <gamerule>                 - Inspects the live value of a specific setting
/naturalreproduction set <gamerule> <val>           - Adjusts a setting live (e.g. /naturalreproduction set min_scale 60)
/naturalreproduction reset                          - Restores all GameRules to default settings
/naturalreproduction reload                         - Dynamically refreshes scale and modifiers on all loaded mobs
/naturalreproduction trackerlogs list               - Views recent autonomous wild reproduction events
/naturalreproduction trackerlogs enable/disable     - Toggles autonomous reproduction event logging
/naturalreproduction trackerlogs clear              - Clears the breeding tracker log history

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⚙️ Native Namespaced GameRules

[!WARNING] Important: Global Config vs. In-Game GameRules
The global configuration file only defines default values for brand-new worlds at creation time.
If you have already created or opened a world, changing the config file will have no effect. You must adjust settings in-game using the Edit Game Rules UI screen or the /naturalreproduction set / /gamerule commands.

GameRule	Type	Default	Description
natural-reproduction:enabled	Boolean	true	Master toggle for autonomous wild animal reproduction.
natural-reproduction:density_cap	Integer	10	Maximum same-species animals within 16 blocks for breeding.
natural-reproduction:rate	Integer	24000	Average tick interval between breeding attempts (24000 = 1 MC Day).
natural-reproduction:min_scale	Integer	10	Minimum animal scale percentage (10 = 0.10x scale).
natural-reproduction:normal_scale	Integer	95	Normal baseline animal scale percentage (95 = 0.95x scale).
natural-reproduction:max_scale	Integer	120	Maximum animal scale percentage (120 = 1.20x scale).
natural-reproduction:scale_drops	Boolean	true	Dynamically scales item drops based on physical body scale.
natural-reproduction:cramped_space_penalty	Boolean	true	Enables size stunting in tight pens down to 0.10x and spacious pasture recovery up to 1.20x.
natural-reproduction:inbreeding_degradation	Boolean	true	Enables multi-generational inbreeding genetic collapse.
natural-reproduction:pasture_enrichment	Boolean	true	Enables bonuses from feeding troughs, hay, water, and shelter.
natural-reproduction:overgrazing	Boolean	true	High-density herds convert grass blocks to dirt/coarse dirt.
natural-reproduction:gestation_period	Boolean	true	Enables pregnancy countdown timer for autonomous breeding.
natural-reproduction:manual_gestation	Boolean	true	Applies pregnancy gestation timers to manual player feeding.
natural-reproduction:gestation_duration	Integer	24000	Duration of pregnancy countdown in ticks (24000 = 1 MC Day).
natural-reproduction:fertilized_chicken_eggs	Boolean	true	Chickens lay 100% hatch Fertilized Eggs during wild breeding.
natural-reproduction:chicken_infertile_regular_eggs	Boolean	true	Reduces unfertilized regular egg hatch chance to 1/64.
natural-reproduction:dispenser_egg_hatch_chance	Integer	75	Hatch chance percentage for dispenser-fired Fertilized Eggs.
natural-reproduction:herd_dynamics	Boolean	true	Animals elect Alpha leaders and maintain pastoral flocking.
natural-reproduction:herd_stampede	Boolean	true	Herds panic in synchronized stampedes when attacked.
natural-reproduction:biome_fertility	Boolean	true	Animals in native biomes gain 2x breeding speed and +15% quality.
natural-reproduction:biome_variants	Boolean	true	Offspring adapt visual variant skins in specialized biomes.
natural-reproduction:tracker_logs	Boolean	false	Records autonomous reproduction events to console and log.
natural-reproduction:allow_<species>	Boolean	true	27 individual toggles to enable/disable specific species.

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📖 In-Depth How-To & Gameplay Playbook

Mastering animal husbandry in Natural Reproduction requires thoughtful ecosystem management:

1. Designing an Enriched Pasture

• Build pastures with at least 8x8 to 16x16 blocks of open grass.
• Place Hay Bales, Water Cauldrons, and Composters near grazing areas.
• Build a roofed shelter (wood/stone roof with open fence gates). Animals grazing in enriched pastures gain the Well-Nourished state (+25% faster breeding checks, +10% offspring scale, golden sparkles).

2. Establishing Herds & Alpha Leadership

• Introduce at least 3–4 animals of the same species into your pasture.
• The largest animal automatically becomes the Alpha leader. Surrounding animals will follow the leader during daytime grazing and retreat to shelter at dusk.

3. Managing Gestation & Prenatal Care

• When animals mate, the mother enters pregnancy gestation (1 Minecraft Day).
• Ensure pregnant mothers have access to enriched pastures to guarantee their offspring receive Prenatal Vitality (+15% HP, +10% Speed, +10% Scale).

4. Preventing Inbreeding Collapse

• Never breed consecutive generations of the same closed family.
• If you notice animals shrinking or dropping Rotten Flesh, capture a wild animal from a distant biome and introduce it to your herd. Outcrossing triggers Hybrid Vigor (+15% scale boost and complete pedigree recovery).

5. Managing Chicken Flocks

• Collect Fertilized Eggs laid by breeding chickens. Throw them manually for a guaranteed 100% baby chick hatch, or load them into Dispensers (75% hatch chance) for automated hatchery systems.

6. Live In-Game Configuration

• Adjust scale limits on the fly using /naturalreproduction set min_scale 50 and /naturalreproduction set max_scale 130.
• Run /naturalreproduction reload to immediately clamp and update all active animals across loaded chunks!

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🧩 Recommended Sister Mods

If you enjoy Natural Reproduction, these companion mods from the Vanilla Outsider & Delayed Gratification Collections plug in seamlessly:

• 🐕 Better Dogs: Adds comprehensive dog personalities, guard posts, genetic inheritance, and realistic breeding mechanics to wolf companions.
• 🌾 Agrarian Reform: Pairs deep animal husbandry with grounded farming, companion planting, and moisture-dependent soil ecosystems.
• 💤 True Sleep: Accelerates world time, crop growth, and animal pregnancy cycles smoothly while resting in bed overnight.

🌟 Explore the full Delayed Gratification Collection for more immersive, long-term survival enhancements.

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☕ Support My Work

If you enjoy the Delayed Gratification Collection and want to support ongoing updates:

Indonesian Users: SocioBuzz and Saweria support local payment methods (GoPay, OVO, DANA, QRIS) if you wish to support me locally!

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📜 Credits & Modpack Permissions

Property	Information
Creator / Author	Dasik (Rifaditya)
Collection	Delayed Gratification Collection
License	GNU General Public License v3.0 (GPLv3)
Source Code	GitHub - Rifaditya/DG-natural-reproduction
Issue Tracker	GitHub Issues
Documentation / Wiki	GitHub Wiki

[!IMPORTANT] 📦 Modpack Permissions & Distribution:
You are fully welcome to include this mod in any modpack on any platform! However, the mod file must be downloaded directly through official distribution channels (Modrinth or CurseForge). Re-uploading, mirroring, or redistributing the original mod JAR to third-party mirror sites, scraper portals, or unauthorized launchers is strictly prohibited.

⚖️ License & Fork Guidelines (No Zero-Change Re-uploads):
This project is open-source under the GNU GPLv3. You are fully encouraged to inspect the code, learn from it, and fork the repository to create genuine modifications, substantial feature expansions, or community ports—provided your project remains open-source under GPLv3 with proper attribution.
However, straight 1:1 re-uploads, clone forks with no meaningful functional changes, or re-publishing identical builds under different project names (e.g. to farm downloads or rewards) are strictly forbidden.

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Made with ❤️ for the Minecraft community
Part of the Delayed Gratification Collection