Animal Weights

Each passive animal (cow, pig, sheep, chicken, rabbit and modded animals that track weight) starts at a weight of 1 with a value range of 1 to 8, and the weight moves as conditions around it change. An animal earns a point at a 50% chance when it has four of four good conditions, and loses a point at a 25% chance with three of four, or a 50% chance with two or fewer. Four checks decide whether an animal gains or loses weight: light at block level 14 or above, water no more than 4 blocks away, grass or moss within 4 blocks, and under 7 mobs of the same species inside a 5x5 area. Checks run once per in-game hour.

Each animal's weight scales how many times its loot table is rolled, so a cow at weight 5 rolls that table five times rather than once. Healthy animals therefore yield more loot when killed. A weight of 0 marks an animal as sick, which turns it green, stops it from breeding and makes it float with a Sick label above its head. Animals at weight 2 or higher show a bonus drop icon with +N, giving the number of extra rolls. A server running it needs every connecting player to have it too. Files are published for Fabric, Forge and NeoForge.