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mc_da avatar mc_da
Level 56 : Grandmaster Technomancer
Better genetics is a datapack that adds a twist to animal breeding. Wild animals now spawn with random statistics. Your goal is to find animals with good properties and breed them together to create super-animals.


Right click or left click an animal with a carrot on a stick to view its statistics. Hover over lines of text in chat for additional info about a certain statistic.
Note 1: Right-clicking a horse, a llama or a tamed pet may not trigger the scan. To get around that either punch them or try standing furether away (approximately 6 blocks away works best).
Note 2: Punching an animal with carrot on a stick or a mutation catalyst (see below) deals no damage, as long as punching wouldn't kill them in one hit.

  • Most animals get asigned a Growth stat (determines how fast babies grow into adults) and a Fertility stat (determines how often they can breed).
  • Most animals have the ability to get asigned a Special Mutation.
  • Cows, pigs, sheep, chickens, rabbits, horses and llamas now drop different amounts of meat, leather, feathers etc. depending on their stats.
  • Chickens may lay eggs more often depending on their Egg Laying value.
  • Sheep have a chance of spawning with the ability to regrow wool without having to eat grass.
  • Some rabbits are more likely to drop rabbit's foot.
  • Bees can produce honey faster depending on their stats.
  • Wolves now spawn with randomly generated Attack damage, Armor and Movement speed attributes.
  • Cats will bring players different morning gifts based on their Personality. Some cats will also give their owners positive potion effects.
  • Some parrots will apply negative potion effects to hostile mobs.
  • Foxes have many boosts that help accelerate the breeding process of nearby animals.
  • Striders will spawn with varied movement speeds.
  • Goats have varying ramming damage and aggression.

Animal breeding is the main focus of this datapack. Babies inherit their stats from their parents: the baby's stat value is the average of both parents with a small chance for it to be increased or lowered by one (The only exception are wolf attributes, which can vary much more from parents' values). You can get perfect animals by selecting babies with stats better than their parents and breed them together.


Mutation catalysts are special items that allow you to increase most stats of an animal without breeding. They come in two varieties:
  • Weak catalyst (common): increases one non-max stat by 1
  • Potent catalyst (rare): increases all stats that can be increased by 1.
Punch animals with mutation catalysts to use them.
Catalysts can be found in most types of loot/treasures chests and are more common in rarer structures (i.e. strongholds).


Download the file and put it in the datapacks folder for the world/server you want to install it.
For a full explanation watch this tutorial: Click here
Note: Do not extract the .zip file, only copy it.


  • Version: Minecraft Java 1.16.2 or higher
  • Servers: This datapack is compatible with any 1.16+ vanilla server. I cannot guarantee it will work on Spigot and other modded servers.
  • Other datapacks: Better Genetics will conflict with any datapack that changes animal loot tables (for example datapacks that make animals drop their heads). It should work normally in combination with any other datapack.

Depending on the feedback I may update the datapack to support more animals, add more features to already supported mobs or balance them (because all animals are balanced but some animals are more balanced than others). Therefore any feedback and suggestions are highly apreaciated.


Datapack showcase by skunkmunkee:

Forelich131 is doing a vanilla-ish let's play with datapacks, including better genetics. Check it out

PS: If you made any content related to this datapack (youtube video, reddit post etc.) and you want it to be linked in this post please contact me.
CompatibilityMinecraft 1.17

7 Update Logs

1.17 update : 07/10/2021 10:30:58 pmJul 10th

  • The datapack is now compatible with 1.17+ only
  • Goats have varying ram damage and aggression
  • Some changes to how attack and speed attributes are calculated
Note: I wanted to add some stats for axolotls as well, but they don't keep their data when you bucket them. I was unable to work around this bug.

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08/05/2021 7:14 pm
Level 5 : Apprentice Goblin
IliketobuildMC avatar
this data pack is soooo cool i might try a survival world with it keep up the great work!
07/21/2021 11:40 am
Level 1 : New Miner
Froelich131 avatar
I'm really glad you're continuing updating this datapack! I really enjoy it and there's a lot to do! Thank you again for the datapack.
07/22/2021 6:10 pm
Level 56 : Grandmaster Technomancer
mc_da avatar
Thanks for the kind words! I appreciate it.
04/28/2021 1:29 pm
Level 1 : New Miner
HickHorse4814 avatar
no meu minecraft não funcionou
04/27/2021 11:43 pm
Level 5 : Apprentice Artist
Reifan04 avatar
This pack looks amazing, and I definitely want to use it in my modified survival world. :3 However, I'd love to see foxes get more traits that suit their AI. Definitely basic stuff like health, but perhaps also things like how often they pick berry bushes, how picky they are with food (not eating stuff that gives bad effects, etc), or how trusting/distrusting they are towards players.
05/07/2021 12:14 pm
Level 56 : Grandmaster Technomancer
mc_da avatar
The things you're suggesting are very hard to do with datapacks (at least in a non-laggy way).
I personally think foxes are okay the way they are.
09/29/2020 2:15 am
Level 1 : New Miner
ShenPosDoGu avatar
Te amo, es de los mejores datapacks que he usado y probado, estaré probándolo y al pendiente de cada actualización. Sigue así!!
01/06/2021 12:09 pm
Level 10 : Journeyman Collective
TheNeto06 avatar
TRANSLATE FROM SPANISH: I love you, its one of the best  datapacks i've ever used and tested, i'll be trying it and pending for every single next update. Keep it up!!
08/11/2020 5:45 pmhistory
Level 1 : New Crafter
glaaceon avatar
Hi there! I have some questions regarding this datapack because I don't wanna spend a while spawning things.

General questions:
- What are all of the mutations?
- What are the chances of mutations?

Entity-specific questions:
- Some breedable entities don't have genetics (hoglins, ocelots, pandas, turtles, villagers). Will you be adding genetics for them?
- What are the chances of a bee being peaceful?
- What are all of the cats' personalities, and what do each of them do?
- (EDIT) I noticed that sometimes cats give items that aren't on the immediate list. May I ask which items can be obtained from each personality?
- What are all of the effects cats can give players?
- What are the chances of the cats' personalities? effects?
- I noticed that all the horse variants (except for horses of course) have the same speed. Is this always the case?
- On this note, I noticed donkeys and mules have a negative jump height (also always the same). Is this an error?
- Also on this topic, I noticed undead horses have zero health. Is this also an error?
- What are all of the foxes' animal boosts?
- What are the chances to get each animal boost?
- What are all of the mob effects parrots can give?
- What are the chances of getting each mob effect on parrots?
- What are the chances a sheep can have the wool regrow gene?

By the way, if you don't know what the odds are for the mutations etc., please tell me.
06/27/2020 12:44 pm
Level 1 : New Miner
lateyc avatar
I am using server.pro vanila in version 1.16 ... I already installed the datapack but it does not work for me ... it does not let me see the statistics of the animal with the carrot stick ... what do I do pls help
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