Minecraft:Mob spawning - Revision history

SyncBot: Sync: updated from Minecraft

2026-11-08T12:14:27Z

Sync: updated from Minecraft

← Older revision		Revision as of 12:14, 8 November 2026
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	* Any [[Minecraft:entity]] can be spawned using the {{cmd\|summon}} command.		* Any [[Minecraft:entity]] can be spawned using the {{cmd\|summon}} command.
	* A rider mob can be spawned on a mob, or a ride can be spawned for a mob using {{Cmd\|ride}} {{In\|be}}, provided that both mobs allow riding.		* A rider mob can be spawned on a mob, or a ride can be spawned for a mob using {{Cmd\|ride}} {{In\|be}}, provided that both mobs allow riding.
	* When mobs that are capable of [[Minecraft:breeding]] breed, a new baby mob will spawn beneath one of the parent's feet.

	=== Passive mobs ===		=== Passive mobs ===
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	* have had something added to their [[Minecraft:inventory]], including having something [[Minecraft:Dispense\|dispensed]] upon them (such as a [[Minecraft:saddle]]) or something they have picked up, but never for anything they spawn with. This includes dolphins playing with items{{verify}}.		* have had something added to their [[Minecraft:inventory]], including having something [[Minecraft:Dispense\|dispensed]] upon them (such as a [[Minecraft:saddle]]) or something they have picked up, but never for anything they spawn with. This includes dolphins playing with items{{verify}}.
	* have been named with a [[Minecraft:name tag]]. However, one created from a renamed [[Minecraft:spawn egg]] does despawn as normal.		* have been named with a [[Minecraft:name tag]]. However, one created from a renamed [[Minecraft:spawn egg]] does despawn as normal.
	* have had the NBT tag <code>{PersistenceRequired: 1b}</code> set on them, whether by being summoned with it, or by being set manually with {{cmd\|data merge}} or {{cmd\|data modify}}. This is also the only way to prevent wandering traders from despawning.		* have had the NBT tag <code>{PersistenceRequired:1b}</code> set on them, whether by being summoned with it, or by being set manually with {{cmd\|data merge}} or {{cmd\|data modify}}. This is also the only way to prevent wandering traders from despawning.

	The following mobs have their despawning prevented{{info needed\|Does this mean they are marked as persistent in the game's code, or is there some other rule in the game's code that specifically prevents them from despawning?}}, and do not count towards their respective mob caps:		The following mobs have their despawning prevented{{info needed\|Does this mean they are marked as persistent in the game's code, or is there some other rule in the game's code that specifically prevents them from despawning?}}, and do not count towards their respective mob caps:

SyncBot: Sync: updated from Minecraft

2026-11-07T12:09:43Z

Sync: updated from Minecraft

← Older revision		Revision as of 12:09, 7 November 2026
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	** The [[Minecraft:chunk]] the mob is in must still be loaded for the mob to despawn. Otherwise, the mob is saved until the [[Minecraft:Chunk#Chunk loading\|chunk is loaded]] again. For example, if a player enters a [[Minecraft:nether portal]] while being chased by a spider, the spider is saved, and it resumes chasing the player coming back through the same portal. In the case of a player reloading chunks, the loading happens before the player is added, meaning they may despawn.		** The [[Minecraft:chunk]] the mob is in must still be loaded for the mob to despawn. Otherwise, the mob is saved until the [[Minecraft:Chunk#Chunk loading\|chunk is loaded]] again. For example, if a player enters a [[Minecraft:nether portal]] while being chased by a spider, the spider is saved, and it resumes chasing the player coming back through the same portal. In the case of a player reloading chunks, the loading happens before the player is added, meaning they may despawn.
	* All mobs (including persistent mobs) despawn immediately at Y=-128 and below.		* All mobs (including persistent mobs) despawn immediately at Y=-128 and below.
	* ~~Ocelots and most~~ monster mobs (including those that are holding items) despawn if the difficulty is set to [[Minecraft:Peaceful]], regardless of where the player is located. Monster mobs that do not despawn include hoglins, piglins, shulkers and sulfur cubes in all editions.		* Most monster mobs (including those that are holding items) despawn if the difficulty is set to [[Minecraft:Peaceful]], regardless of where the player is located. Monster mobs that do not despawn include hoglins, piglins, shulkers and sulfur cubes in all editions.
	* For despawning to occur, there must be at least one non-spectator player in the dimension.		* For despawning to occur, there must be at least one non-spectator player in the dimension.
	* Chickens that originally spawned as [[Minecraft:chicken jockey]]s follow zombie despawn rules, rather than chicken despawn rules.		* Chickens that originally spawned as [[Minecraft:chicken jockey]]s follow zombie despawn rules, rather than chicken despawn rules.

SyncBot: Sync: updated from Minecraft

2026-10-31T11:11:08Z

Sync: updated from Minecraft

← Older revision		Revision as of 11:11, 31 October 2026
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	* Any [[Minecraft:entity]] can be spawned using the {{cmd\|summon}} command.		* Any [[Minecraft:entity]] can be spawned using the {{cmd\|summon}} command.
	* A rider mob can be spawned on a mob, or a ride can be spawned for a mob using {{Cmd\|ride}} {{In\|be}}, provided that both mobs allow riding.		* A rider mob can be spawned on a mob, or a ride can be spawned for a mob using {{Cmd\|ride}} {{In\|be}}, provided that both mobs allow riding.
			* When mobs that are capable of [[Minecraft:breeding]] breed, a new baby mob will spawn beneath one of the parent's feet.

	=== Passive mobs ===		=== Passive mobs ===

SyncBot: Sync: updated from Minecraft

2026-10-28T11:13:03Z

Sync: updated from Minecraft

← Older revision		Revision as of 11:13, 28 October 2026
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	{{Exclusive\|Java\|section=1}}		{{Exclusive\|Java\|section=1}}

	As new [[Minecraft:chunk]]s are generated, they have a chance to generate an initial set of [[Minecraft:mob]]s from the "creature" category (i.e. naturally-occurring land animals) along with them, ignoring the [[#Java Edition mob cap\|mob cap]], any applicable [[#Spawn costs\|spawn costs]], ~~and the setting of~~ {{Cmd\|/gamerule spawn_mobs}}. Any randomness affecting this entire process is derived from the [[Minecraft:world seed]] and the position of the chunk that is being generated. Even though biome distribution within the chunk is already known at this point in the generation, the biome of the north west corner of the chunk at the maximum world height is used to make all decisions about this spawning process. As a result, biomes that generate only underground can never affect the initially spawned mobs. Similarly, although structures have been generated already, their potentially configured spawn overrides are ignored. The spawn conditions for most animals prevent them from spawning on "non-terrain blocks", so they won't end up generating on the roofs (or inside) of structures.		As new [[Minecraft:chunk]]s are generated, they have a chance to generate an initial set of [[Minecraft:mob]]s from the "creature" category (i.e. naturally-occurring land animals) along with them, ignoring the [[#Java Edition mob cap\|mob cap]] and any applicable [[#Spawn costs\|spawn costs]], provided that {{Cmd\|/gamerule spawn_mobs}} is {{cd\|true}}. Any randomness affecting this entire process is derived from the [[Minecraft:world seed]] and the position of the chunk that is being generated. Even though biome distribution within the chunk is already known at this point in the generation, the biome of the north west corner of the chunk at the maximum world height is used to make all decisions about this spawning process. As a result, biomes that generate only underground can never affect the initially spawned mobs. Similarly, although structures have been generated already, their potentially configured spawn overrides are ignored. The spawn conditions for most animals prevent them from spawning on "non-terrain blocks", so they won't end up generating on the roofs (or inside) of structures.

	The selected biome supplies all relevant mob spawn settings for this process:		The selected biome supplies all relevant mob spawn settings for this process:
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	* [[Minecraft:Ocean Monument]] – A total of three [[Minecraft:elder guardian]]s spawn in the wings and "penthouse" of the structure.		* [[Minecraft:Ocean Monument]] – A total of three [[Minecraft:elder guardian]]s spawn in the wings and "penthouse" of the structure.
	* [[Minecraft:Ocean Ruins]] – Several [[Minecraft:drowned]] spawn between the ruins. They can spawn with equipment, in baby form, or as a [[Minecraft:zombie nautilus jockey]] per the usual rules.		* [[Minecraft:Ocean Ruins]] – Several [[Minecraft:drowned]] spawn between the ruins. They can spawn with equipment, in baby form, or as a [[Minecraft:zombie nautilus jockey]] per the usual rules.
	* [[Minecraft:Pillager Outpost]]s – [[Minecraft:Allay]]s and [[Minecraft:iron golem]]s spawn in cages near the tower in pillager outposts.		* [[Minecraft:Pillager Outpost]]s – [[Minecraft:Allay]]s and [[Minecraft:iron golem]]s spawn in cages near the tower in pillager outposts. Pillagers spawn in fixed locations in and around the outpost {{in\|be}}
	* [[Minecraft:Swamp Hut]] – A [[Minecraft:witch]] and a [[Minecraft:black cat]] spawn inside the hut.		* [[Minecraft:Swamp Hut]] – A [[Minecraft:witch]] and a [[Minecraft:black cat]] spawn inside the hut.
	* [[Minecraft:Village]] – Villages not only spawn a number of [[Minecraft:villager]]s, but also typically come with one or more existing [[Minecraft:iron golem]]s and various animals, such as [[Minecraft:cow]]s, [[Minecraft:horse]]s, [[Minecraft:pig]]s, [[Minecraft:sheep]], and [[Minecraft:stray cat]]s. If the village is abandoned, the villagers instead spawn as [[Minecraft:zombie villager]]s and iron golems will not spawn at all.		* [[Minecraft:Village]] – Villages not only spawn a number of [[Minecraft:villager]]s, but also typically come with one or more existing [[Minecraft:iron golem]]s and various animals, such as [[Minecraft:cow]]s, [[Minecraft:horse]]s, [[Minecraft:pig]]s, [[Minecraft:sheep]], and [[Minecraft:stray cat]]s. If the village is abandoned, the villagers instead spawn as [[Minecraft:zombie villager]]s and iron golems will not spawn at all.

SyncBot: Sync: updated from Minecraft

2026-10-25T11:12:40Z

Sync: updated from Minecraft

← Older revision		Revision as of 11:12, 25 October 2026
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	* {{EntityLink\|Endermite}}		* {{EntityLink\|Endermite}}
	* {{EntityLink\|Evoker}}		* {{EntityLink\|Evoker}}
			* {{EntityLink\|Frostbite}}{{upcoming\|java 26.4}}
	* {{EntityLink\|Ghast}}		* {{EntityLink\|Ghast}}
	* {{EntityLink\|Giant}}		* {{EntityLink\|Giant}}
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	\|		\|
	* The spawning block must be in a swamp biome.		* The spawning block must be in a swamp biome.
	* The spawning block be on level 51 through 69 inclusive.		* The spawning block must be on level 51 through 69 (inclusive).
	* Chance of failure based on [[Minecraft:Difficulty#Moon phase\|the phase of the moon]].		* Chance of failure based on [[Minecraft:Difficulty#Moon phase\|the phase of the moon]].
	* 50% chance of failure.		* 50% chance of failure.
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	\|{{EntityLink\|Stray}}		\|{{EntityLink\|Stray}}
	\|		\|
	* The location of the spawn must have sky access. {{until\|26.4}}		* The location of the spawn must have sky access.{{until\|26.4}}
	\|-		\|-
	\|{{EntityLink\|Zombie Horse}}		\|{{EntityLink\|Zombie Horse}}

SyncBot: Sync: updated from Minecraft

2026-10-17T11:12:49Z

Sync: updated from Minecraft

← Older revision		Revision as of 11:12, 17 October 2026
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	* Spawn has a {{frac\|1\|3}} chance of failure.		* Spawn has a {{frac\|1\|3}} chance of failure.
	* Can spawn on leaves.		* Can spawn on leaves.
			\|-
			\|{{EntityLink\|Parched}}
			\|
			* The location of the spawn must have sky access.
	\|-		\|-
	\|{{EntityLink\|Piglin}}		\|{{EntityLink\|Piglin}}
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	\|{{EntityLink\|Slime}} (swamp biome)		\|{{EntityLink\|Slime}} (swamp biome)
	\|		\|
	* ~~the~~ spawning block must be in a swamp biome.		* The spawning block must be in a swamp biome.
	* ~~the~~ spawning block be on level 51 through 69 inclusive.		* The spawning block be on level 51 through 69 inclusive.
	* ~~chance~~ of failure based on [[Minecraft:Difficulty#Moon phase\|the phase of the moon]].		* Chance of failure based on [[Minecraft:Difficulty#Moon phase\|the phase of the moon]].
	* 50% chance of failure.		* 50% chance of failure.
	\|-		\|-
	\|{{EntityLink\|Slime}} (slime chunks)		\|{{EntityLink\|Slime}} (slime chunks)
	\|		\|
	* ~~the~~ spawning block is below level 40.		* The spawning block is below level 40.
	* 90% chance of failure.		* 90% chance of failure.
	\|-		\|-
	\|{{EntityLink\|Stray}}		\|{{EntityLink\|Stray}}
	\|		\|
	* The location of the spawn must have sky access.		* The location of the spawn must have sky access. {{until\|26.4}}
	\|-		\|-
	\|{{EntityLink\|Zombie Horse}}		\|{{EntityLink\|Zombie Horse}}

SyncBot: Sync: updated from Minecraft

2026-10-16T11:12:25Z

Sync: updated from Minecraft

Show changes

SyncBot: Sync: updated from Minecraft

2026-10-15T11:13:21Z

Sync: updated from Minecraft

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 * Up to four attempts to find a valid position are made per pack member, each with a random horizontal offset around the center position as described above. Mobs usually spawn on the center of a block, but if a mob's collision box would be partially outside the chunk this way, e.g. because it is wider than a block, its precise position is adjusted to fits the mob's collision box into the bounds of the chunk. The initial horizontal orientation of the spawned mob is random.
 * The usual spawn conditions (such as [[Minecraft:light level]], valid blocks to spawn on, and absence of obstructions) for the selected mob are validated at the selected position. If those checks succeed, the mob is added to the world and the iteration completes.
 === Spawned creatures ===
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+|
 |-
-| {{EntityLink|Chicken}} || 4 || 10 || Farm animal biomes<ref name="farm animal biomes" group="A">"Farm animals" spawn with the same group sizes and weights across the following biomes:
+| rowspan="4" | {{EntityLink|Chicken}}
 <div class="hlist">
 * {{BiomeLink|Badlands}}
@@ Line 113: / Line 111: @@
 * {{BiomeLink|Windswept Savanna}}
 * {{BiomeLink|Wooded Badlands}}</div></ref>
+|
+|

SyncBot: Sync: updated from Minecraft

2026-10-11T11:08:38Z

Sync: updated from Minecraft

← Older revision		Revision as of 11:08, 11 October 2026
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	\|{{HistoryLine\|\|1.18.2\|dev=22w07a\|Aquatic mobs now spawn only if the block above is a non-waterlogged water block, preventing fish from spawning inside bubble elevators.}}		\|{{HistoryLine\|\|1.18.2\|dev=22w07a\|Aquatic mobs now spawn only if the block above is a non-waterlogged water block, preventing fish from spawning inside bubble elevators.}}
	\|{{HistoryLine\|\|1.21.9\|dev=25w35a\|Added the game rule {{cd\|spawnMonsters}}, which toggles natural monster spawning only.}}		\|{{HistoryLine\|\|1.21.9\|dev=25w35a\|Added the game rule {{cd\|spawnMonsters}}, which toggles natural monster spawning only.}}
			}}

			=== Bedrock Edition ===
			{{HistoryTable
			\|{{HistoryLine\|bedrock}}
			\|{{HistoryLine\|\|1.21.0\|dev=Preview 1.21.0.20\|Now when mobs spawn in groups, they’ll spawn on the center of the block instead of northwest corner. <ref>{{bug\|MCPE-99315\|\|\|Fixed}}</ref>}}
	}}		}}

SyncBot: Sync: updated from Minecraft

2026-10-07T11:20:35Z

Sync: updated from Minecraft

← Older revision		Revision as of 11:20, 7 October 2026
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	== References ==		== References ==
	~~<references/>~~		{{Reflist}}

	== External links ==		== External links ==

← Older revision		Revision as of 11:12, 25 October 2026
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	* {{EntityLink\|Endermite}}		* {{EntityLink\|Endermite}}
	* {{EntityLink\|Evoker}}		* {{EntityLink\|Evoker}}
			* {{EntityLink\|Frostbite}}{{upcoming\|java 26.4}}
	* {{EntityLink\|Ghast}}		* {{EntityLink\|Ghast}}
	* {{EntityLink\|Giant}}		* {{EntityLink\|Giant}}
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	\|		\|
	* The spawning block must be in a swamp biome.		* The spawning block must be in a swamp biome.
	* The spawning block be on level 51 through 69 inclusive.		* The spawning block must be on level 51 through 69 (inclusive).
	* Chance of failure based on [[Minecraft:Difficulty#Moon phase\|the phase of the moon]].		* Chance of failure based on [[Minecraft:Difficulty#Moon phase\|the phase of the moon]].
	* 50% chance of failure.		* 50% chance of failure.
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	\|{{EntityLink\|Stray}}		\|{{EntityLink\|Stray}}
	\|		\|
	* The location of the spawn must have sky access. {{until\|26.4}}		* The location of the spawn must have sky access.{{until\|26.4}}
	\|-		\|-
	\|{{EntityLink\|Zombie Horse}}		\|{{EntityLink\|Zombie Horse}}