BredExempt

Your breeding and egg farms are quietly starving your natural spawns. BredExempt stops that.

In vanilla Minecraft, every animal you breed — and every chick you hatch from a thrown egg — counts toward the passive mob cap. Pack a pen with cows, sheep, pigs, or chickens and you push the loaded area toward its cap: fewer animals spawn in the wild around you, and your farm slowly chokes natural spawning.

What it does

When two animals breed, it marks the newborn and both parents as persistent.
When a chick hatches from a thrown egg, it marks the chick as persistent too.

Persistent mobs are skipped by the natural-spawn cap count — so your breeding and egg farms stop consuming the passive-creature cap, leaving that room for naturally spawning wildlife.

Commands & config

/bredexempt inspect — look at an animal: marked or not, why, and whether it still counts toward the cap. Click the output to copy it.
/bredexempt cap — live cap accounting for your dimension: counted vs cap, exempt vs wild.
Optional config/bredexempt.properties — toggles for offspring / parents / egg-hatched chicks, plus an entity allowlist/denylist. Zero config needed by default.
Modpacks can use the #bredexempt:allowed / #bredexempt:denied entity tags instead — a plain datapack, no config edits.

Modded animals

Modded animals are marked exactly like vanilla ones when their mod uses Minecraft's standard Animal breeding flow — many vanilla-style farm/wildlife mods do. Modded wildlife gains spawn room when it spawns through the vanilla natural-spawning system in the standard creature category.

Mods with custom breeding systems, custom spawners, custom mob caps, or custom egg/hatching mechanics may not be covered — if you find one, open an issue and dedicated support can be looked at.

Server support

Relies on vanilla's persistent-mob cap exemption.