Compatibility
Minecraft: Java Edition
Platforms
Supported environments
Creators
Details

Gameplay screenshot
Note: There are no labels above the animals in the actual mod, this is what it would look like

Every farm animal carries a weight
Cows, pigs, sheep, chickens, rabbits, and mooshrooms all get an integer weight from 0 to 8, shown above their head. New mobs spawn at weight 1.

Default state: weight 1, vanilla drops
A freshly-spawned animal wandering the world starts at weight 1, vanilla drops, vanilla XP, no sickness. In open terrain wild animals usually plateau here

Cramped pens make animals sick
Stuff a herd into a tiny pen with no light, no water, and no grass and their weight ticks down every in-game day. At weight 0 they turn sick — Slowness I, no breeding, and their drops get capped and culled.

Good conditions push weight up
Give an animal light (≥ 14 brightness), water (a source block or filled cauldron it can reach), grass to graze on, and at least 6 walkable cells around it, and it gains weight every day at dawn. Three of four conditions plateaus it; all four push it to 8

Peak: weight 8
A well-kept pen converges on weight 8 and stays there. This is what "thriving" looks like.




