Minecraft 26.1 Snapshot 4 Reworks Baby Mounts

Mojang released the fourth snapshot for the 26.1 update cycle on 20 January 2026, delivering updated visual models for baby equines alongside data pack revisions and bug repairs. If you test bleeding-edge builds on your test server or look for community instances on our Minecraft server list, the changes in minecraft 26.1 snapshot 4 affect slot-targeting syntax, mob hitboxes, and dimension sky rendering.

Visual and Model Redesigns for Mounts

Several four-legged rideable mobs received physical overhauls in this development cycle.

Baby Equine Overhauls

Mojang redesigned models and textures across all juvenile equines. The visual refresh covers standard horses, donkeys, and mules, alongside undead variants. Because the new visuals occupy more space, developers increased the collision bounding box on baby horses, baby zombie horses, and baby skeleton horses. Note that baby skeleton and zombie variants remain restricted to Creative mode inventory selection or command invocation. A texture correction was also delivered for baby chicken wings.

Audio Additions

Alongside the graphical changes, new horse audio events were added for foal behaviours. These include dedicated sound triggers covering ambient noise, pain, death, anger, feeding, falling, impact landings, walking steps, and breathing.

Technical Changes and Data Format Bumps

The test build advances data formats and introduces structural rules for crop growth and End dimension mechanics.

Inventory Slot Syntax

Data Pack Version 97.1 alters how commands inspect container slots on specific humanoid mobs. Previously, administrators used separate slot names. The terms villager.* and piglin.* have been removed entirely. Target queries for villager and piglin inventories must now use the unified prefix mob.inventory.* instead.

Block Placement Tags

Three block tags now define where sprawling crops and stems can sit and survive: #supports_stem_fruit, #supports_pumpkin_stem_fruit, and #supports_melon_stem_fruit. In resource packs, the format incremented to Resource Pack Version 78.1 to incorporate the new foal sound events and texture files.

The End World Clock

A new world clock component, minecraft:the_end, now operates in The End dimension. This component directly governs the frequency and appearance of sky flash events within the dimension.

What Breaks for Server Administrators

Administrators preparing scripts, datapacks, or environments for future Minecraft 26.1 servers must address syntax and hitbox modifications.

Custom command blocks and functions checking trading inventories will fail to execute if they reference villager.* or piglin.*. These need replacing with mob.inventory.*. In addition, expanding the collision box of baby horses, skeleton horses, and zombie horses means existing stable designs, automatic breeders, and compact sorting chutes might suffocate foals or stop them fitting through gaps that previously allowed passage.

Server plugins supporting utilities like EssentialsX 2.22.0 or custom trade overrides will also encounter trading shifts. Multiple villager trade rebalance bugs were corrected, including erroneous diamond armour pricing across savanna and desert armorer professions, improper item tiers, and an issue where villagers suffered insomnia. Hostile behaviors were also patched: piglins now initiate proper group hunting against hoglins, and wandering traders limit water bottle sales to two rather than twelve transactions.

What Players Will Notice

Players joining an upgraded instance will immediately see revamped, chunkier visual appearances for baby donkeys, mules, and every horse breed, alongside unique foal sound effects when interacting with or riding near them.

Farmers will notice that pumpkin and melon fruits conform to the new vegetation placement boundaries, preventing fruit crops from generating onto arbitrary terrain blocks without proper soil support tags. In The End, players looking upward will see timed environmental sky flashes synchronised by the new dimension-level clock.