How To Make Animals Spawn In Minecraft

"Respawn" redirects here. For the cake to ready a spawn bespeak in the Under, encounter Respawn Anchor.

This article is well-nigh the natural spawning of mobs. For other uses, see Spawn (disambiguation).

This commodity needs to be updated.

Please update this page to reflect recent updates or newly available information.
Reason: A comprehensive check that this article is up-to-date from 1.9 to i.18 is in society.

Spawning refers to the creation and placement of players and mobs in the Minecraft globe.

1 Actor spawning
- 1.1 World spawn
  - i.1.ane Bedrock earth spawn search
  - 1.i.2 Hazard way
  - 1.1.3 Location
- 1.2 Individual spawn
two Natural generation
- two.1 Animals
- ii.2 Monsters
- 2.three Other mobs
3 Spawn bicycle
- 3.ane Java Edition
  - 3.ane.ane Java Edition mob cap
  - iii.1.two Pack spawning
  - three.1.3 Spawn conditions
- 3.two Bedrock Edition
  - three.two.1 Boulder Edition mob cap
  - 3.2.2 Boulder spawn conditions
  - 3.two.3 Cluster spawning
  - 3.2.4 Structure spawning
4 Other types of spawning
- 4.one General
- 4.2 Animals
- 4.3 Monsters
- four.iv Other mobs
5 Despawning
- v.1 Java Edition
- 5.2 Boulder Edition
6 History
7 Gallery
8 Issues
9 Trivia
10 References
xi External links

Player spawning [ ]

World spawn [ ]

New players initially spawn within a small surface area surrounding the world spawn betoken when the server is not in Adventure mode. This area is 21×21 blocks by default, only can be changed by the spawnRadius gamerule in both unmarried and multiplayer. Upon death or return from the End dimension, the role player respawns within this area unless the actor's individual spawn indicate changed (by using a bed or respawn anchor, or the /spawnpoint command).

When the player outset loads into the world or respawns, the game searches within the world spawn surface area and tries to place the player on a random grass cake. Upon spawning, the player is placed on the highest valid spawn point cake of the X and Z spawn coordinates, even if this would set the player above the maximum build height. However, if there are no valid spawn points but a grass block that was determined to be an invalid spawn signal due to beingness blocked by a block higher up it (though the grass block would decay soon after), the game checks the closest 2 free spaces from below and the player spawns there. If there are absolutely no grass blocks, the player spawns directly at the world spawn indicate, which can even effect in players spawning higher up the Void if there are no blocks at that location.

The earth spawn point too determines the center of the permanently loaded spawn chunks.

The earth spawn point itself can be changed using the /setworldspawn control.

Bedrock world spawn search [ ]

This section needs to be updated.

Delight update this department to reflect contempo updates or newly bachelor data.
Reason: Spawn search rules accept changed in ane.18; more biomes are available to spawn in.

In Bedrock Edition, when a thespian creates a new world, the world spawn point is restricted to specific biomes. The algorithm starts searching from coordinate 0,0, standing outward until an adequate biome is found for the earth spawn point. Using add together-ons, a rare biome can be designated to cause the player to spawn at a distant location, but the game crashes if the biome does not exist or cannot generate.

The algorithm searches for these biomes:

Plains
- At principal plains biome
- Small islands in an ocean (islands are usually a plains biome)
- Patch of plains next to desert, badlands, or snowy plains
Forest
- At principal forest biome
- Minor islands in an ocean (islands can likewise be a forest biome)
Dark Forest
Taiga
- At main taiga biome
- Patch of taiga side by side to old growth pine taiga
- Near beach, snowy taiga, or windswept hills
Jungle
Savanna (only regular variants)

The player spawns inside a 5-cake radius of the indicate selected in the chosen biome, sometimes resulting in the histrion spawning outside the intended spawn biome, ending up in a beach, river, or swamp biome. It is also possible (but rare) for a player to spawn initially underwater and start drowning.^[one]

A search for a valid world spawn biome is not performed for Flat and Old world-types.

Adventure style [ ]

When the server's settings specify the default game style as Hazard (using the server.properties), then the normal spawning mechanic is ignored, and players are spawned direct on the globe spawn bespeak. This includes the X, Y, and Z coordinates, even if there is no cake there, and fifty-fifty if there are blocks above it.

If the Y coordinate is non within a valid spawning expanse, then the server looks up until information technology finds one, up to a maximum of Y=256. If there is infinite to spawn, but information technology is in mid-air, the player spawns in mid-air, even falling into the Void if at that place is a pigsty.

Location [ ]

There are several means to determine the world spawn point:

A compass (that hasn't been assigned to a lodestone) always points to the world spawn point.
Doing the commands /gamerule spawnRadius 0 then /impale.
If commands are disabled, remove all the grass blocks in the 21×21 spawn area (or place a cake above them to make them invalid), make sure the individual spawn point is disabled, and die.
Entities, other than players, falling into the leave portal in the End land exactly at the earth spawn bespeak. Items thrown in mark the spot in the Overworld. Players spawn like they normally do, allowing this action to be used to perform the above without dying, and thus can exist performed in hardcore fashion.
Mods or external programs, such as NBTExplorer or MCEdit, can also be used to find and set the earth spawn bespeak.

Individual spawn [ ]

The individual spawn signal of the player can be inverse by sleeping in a bed, using a respawn anchor, or using the /setworldspawn or /spawnpoint command. If the individual spawning area of the player is obstructed upon death, the player respawns at the globe spawn.

Sleeping in a bed allows for leniency in obstruction, in that the role player respawns on other blocks near the bed if the original point becomes blocked. The same is true for the respawn anchor. If the spawn signal set via /setworldspawn or /spawnpoint becomes obstructed, the thespian is not given this leniency in respawning.

Natural generation [ ]

Animals [ ]

A moo-cow that generated with the map inside a tree's leaves and could not escape, a common sight in forested loma areas.

In Coffee Edition many animals generate upon initial chunk cosmos. These spawns occur just once per chunk. They are non affected by the /gamerule doMobSpawning command.

One in ten newly-generated chunks attempts to generate animal mobs, unremarkably in packs of upward to 4 of the same species. The spawn attempt always starts on elevation of the highest available block in a randomly called column inside the chunk. The chosen position must not exist a solid block for the animals to generate. Once the starting position is chosen for a chunk, a second position is called in a 9×nine block expanse around the starting position. Blocks toward the centre of the 9x9 area are more than likely to be called than blocks toward the edge. The block does not need to be a grass block nor does it need to be illuminated as it does with mob spawning. If an animal can spawn at the second position, information technology does and then. The second position becomes the first position, and a new second position is called like before in a 9x9 area. This process can repeat until each clamper has attempted to spawn ane–4 mobs.

In Bedrock Edition animals do not spawn during chunk generation, but they continually attempt to spawn everywhere as part of the environmental spawning algorithm, according to their spawn weights, biome tags, and block requirements (see Bedrock Edition under Spawn Bicycle, below).

There are 2 types of animals: common animals and biome-specific animals.

Common animals

Mutual beast mobs do not spawn in desert, badlands, beach, snowy plains, river, ocean, or mushroom fields biomes.

Mobs	Weight	Group size
Sheep	half dozen	four
Craven	5	4
Pig	5	4
Cow	4	4

Biome-specific animals

Some beast mobs spawn just in specific biomes.^{[ more information needed ]}

Mobs	Biome	Weight
Axolotl	Lush Caves	four
Cod	Body of water Lukewarm Ocean Common cold Ocean Frozen Ocean	75
Dolphin	Bounding main Warm Ocean Lukewarm Sea Cold Ocean	seven
Ass	Plains	1
Fox	Taiga Snowy Taiga Quondam Growth Pine Taiga	eight
Glow Squid	Body of water ^{[ more information needed ]}	two-iv
Goat	Frozen Peaks Jagged Peaks Snowy Slopes	three
Hoglin ‌^{[ Be only ]}	Crimson Forest	20
Equus caballus	Savanna Plains	4 in plains 1 in savanna
Llama	Savanna Windswept Hills	eight in savanna 5 in windswept hills
Mooshroom	Mushroom Fields	eight
Ocelot Parrot	Jungle Bamboo Jungle	xxx for ocelots 40 for parrots
Panda	Jungle Bamboo Jungle	x in regular jungle forty in bamboo jungle
Polar Bear	Snowy Plains Frozen Ocean Frozen River	one (5 in Frozen Oceans)
Pufferfish Tropical Fish	Warm Sea Lukewarm Sea Deep Lukewarm Ocean	25 for pufferfish 75 for tropical fish
Rabbit	Desert Taiga Old Growth Pine Taiga Snowy Taiga Snowy Plains Frozen Sea Frozen River Snowy Beach Legacy Frozen Ocean Flower Forest	four (20 in blossom forests)
Salmon	River Cold Ocean Frozen Bounding main Lukewarm Ocean	26 in oceans sixteen in rivers
Squid	Ocean River	8
Strider	Nether Wastes Crimson Woods Soul Sand Valley Basalt Deltas Warped Forest	20
Turtle	Embankment	8
Wolf	Taiga (all variants) Wood (all variants) Windswept Hills (all variants)	eight in taigas v in forests and windswept hills

Randomness for animal spawning is derived from the globe seed, which means that worlds with the same seed always generate chunks with the same animals in the same places.

Monsters [ ]

Monsters cannot spawn when the difficulty is set to Peaceful (except piglin‌^{[ BE only ]} and hoglin). At any higher setting they spawn when block light level is 0. The actor cannot slumber when a monster (other than hoglin; and in Java Edition, likewise include slime, magma cube and non-hostile zombified piglin) is nearby, fifty-fifty if the monster has no path to the player.

Common monsters

Common monster mobs can spawn in nearly any biome in the Overworld (except for mushroom fields). They can spawn on the surface and underground. The weight determines the spawn rate in the Boulder Codebase.

Mobs	Weight	Group size
Zombie	100	2-4
Creeper	100	Individually
Skeleton	80	1-2
Spider	100	Individually
Enderman	10	1-2
Witch	5	Individually
Spider Jockey	1	Individually
Chicken Jockey	0.25	Individually

Biome-specific monsters

Some monsters spawn only in specific biomes.

Mobs	Biome
Drowned	Sea (all variants) River (all variants) Dripstone Caves
Ghast	Nether Wastes Soul Sand Valley Basalt Deltas
Hoglin ‌^{[ JE only ]}	Crimson Forest
Husk	Desert (all variants)
Magma Cube	Nether Wastes Basalt Deltas
Slime	Swamp
Stray	Snowy Plains Water ice Spikes Frozen River Frozen Ocean (all variants)
Piglin Zombified Piglin Zombified Chicken Jockey	Under Wastes Cherry Forest

Other mobs [ ]

In Java Edition these mobs still spawn if the /gamerule doMobSpawning command is ready to faux, because they spawn as part of structure generation. In Bedrock Edition nil spawns if the /gamerule doMobSpawning control is fix to fake.

Creature mobs

Mob	Structure generation
Black Cat	A single cat spawn within a Swamp Hut upon generation.
Cat Cow Equus caballus Pig Sheep	Generate as function of the Village generation. Specific animals spawn as office of specific hamlet structures: Animal pens (cow, sheep, pig, or horse), stables (horse, moo-cow, or grunter), butcher'south houses (grunter, cow, or sheep), and shepherd'south houses (sheep).

Monster mobs

Mob	Structure generation
Drowned	Generate as part of some underwater ruins .‌^{[ JE only ]}
Elderberry Guardian Guardian	Generate every bit role of a single Ocean Monument .
Ender Dragon	Created in The Finish when the dimension is created. The ender dragon tin can also be respawned past placing end crystals on the exit portal.
Evoker Vindicator	Generate as part of woodland mansion .
Pillager	Spawn from pillager outposts .
Shulker	Generate equally part of stop cities .
Witch	A single witch spawn within a Swamp Hut upon generation.
Zombie Villager	Generate as a function of an igloo if it generates with a basement. Can spawn as function of zombie village generation, where they never despawn naturally.

Other mobs

Mob	Structure generation
Atomic number 26 Golem	Spawn from pillager outposts .
Fe Golem Villager	Generate as function of the village generation. Each villager spawns in a house with a bed, and an iron golem spawns as part of meeting points.
Villager	Generate as a part of an igloo if it generates with a basement. Can spawn every bit function of zombie hamlet generation, where they never despawn naturally.

Spawn cycle [ ]

Coffee Edition [ ]

Mobs are broadly divided into seven categories: hostile, friendly, water beast (squids and dolphins), underground h2o creature (glow squids), axolotls, water ambience (all four types of fish), and ambience (bat). Hostile and water mobs take a spawning bike in one case every game tick (¹⁄₂₀ of a 2d). Friendly mobs accept only one spawning bike every 400 game ticks (20 seconds). Because of this, where conditions permit, hostile mobs spawn frequently, but passive mobs (animals) spawn rarely. Most animals spawn within chunks when they are generated.

Mobs spawn naturally within a foursquare group of chunks centered on the player, 15×fifteen chunks (240×240 blocks). When there are multiple players, mobs can spawn within the given distance of any of them. However, hostile mobs (and some others) that move further than 128 blocks from the nearest player despawn instantly, and so the mob spawning surface area is more than-or-less limited to spheres with a radius of 128 blocks, centered at each role player. In multiplayer, mob caps are shared past all players, no matter where they are.

Every 24000 game ticks (20 minutes) the game attempts to spawn a single wandering trader with two leashed llamas within 48 blocks of a player or at a village meeting place, if no wandering trader exists in all loaded chunks. The trader does not spawn when the actor is underground.‌‌^{[ Java Edition just ]}

Java Edition mob cap [ ]

This department needs expansion.

You lot tin can help by expanding information technology.
Instructions: The new charge/cost/free energy system used for Soul Sand Valleys and Warped Forests. Each mob has a cost for spawning and deducts it from the biome's full energy. Is information technology reduced per entity spawn or per pack spawn? How does free energy recharge? Etc. Encounter Biome.java, NaturalSpawner.java, and PotentialCalculator.java.

Mob caps are directly proportional to the total number of chunks eligible for spawning. To calculate the cap, the spawning area is expanded by one chunk in every direction (and so the default gives 17×17 chunks), then the total number of chunks is plugged into the following formula:

mobCap = abiding × chunks ÷ 289

The constants for each group are every bit follows:

Monster = 70
Creature = 10
Ambient (bats) = xv
Axolotls = five
Underground water creature (glow squids) = 5
Water creature (squids, dolphins) = five
H2o ambient (fish) = 20
Misc = -1

The "misc" category is used just by entities that are not mobs, do not spawn naturally, and/or following unlike spawning rules than other mobs. Every bit such the mob cap has no bearing on mobs of this category.

In singleplayer, there are always 289 chunks in range, so the constant is always used every bit the global mobcap.

In multiplayer, the global mob cap grows every bit more chunks are loaded. Because chunks that are in the range of multiple players are counted in one case, more chunks and higher mob caps result from the players spreading out.

The number of mobs is checked once per each chunk against the cap. If the number of mobs (dead or live) in a category is at its cap, the entire spawning cycle for that category is skipped. The expanse checked for mobs is the aforementioned every bit the area used for calculating the mobcap, which is the spawning area expanded by one chunk in every management. The mobcap count is separate for each dimension.

Every chunk, the game checks the mobcap. As such, you can accomplish mobcap+pack size from natural spawns.

When /gamerule spectatorsgeneratechunks is set to faux, spectators do not heighten mobcap.

Pack spawning [ ]

Requirements for the spawning location of individual mobs.

For each spawning cycle, attempts are made to spawn packs of mobs per each eligible chunk. An eligible chunk is adamant by the aforementioned bank check for which chunks are random ticked. A random location in the chunk is chosen to be the eye point of the pack. If the block in which a pack spawn occurs is an opaque full cube, further pack spawn attempts are canceled. There are a maximum of 3 pack spawn attempts per mob category.

The pack is spawned within a 41×1×41 (that's a 41×41 square that is one block high) area centered at the initial block. Mobs spawn with the lowest part of their body within this expanse. For each spawn endeavor, from the location of the previous attempt, a location up to 4 blocks away from the previous try is chosen at random. Thus, the spawns are heavily skewed toward the eye of the pack. Approximately 85% of spawns are within 5 blocks of the pack center, and 99% within ten blocks of the center. If the pack spawn enters a biome dissimilar from the starting biome, the rest of the pack and that spawn are canceled.

All mobs within a pack are the same species. The species for the entire pack is called randomly, but based on a weight system from those eligible to spawn at the location of the starting time spawn endeavor in the pack.

The game checks on each spawn if the number of mobs that accept been spawned for the pack is equal to the max spawn attempts, equally well equally the location'due south spawn potential.

Pack spawn size

Pack spawn attempts max out at:

viii Wolves, cod, and tropical fish
6 Horses and Donkeys
1 Ghast
four for whatsoever other mob

When the max pack size is less than the number of possible spawn attempts, some spawns attempts fail, but are seen more commonly in do. Based on the number of mobs that have been successfully spawned. If the max pack size is greater than the number of spawn attempts, one gets only the number of spawns from the spawn attempts. Some mobs have a minimum and max pack size, meaning at that place is an fifty-fifty chance for whatever number of spawn attempts betwixt them occurring.

For zombie villagers, drowned, pillagers, donkeys in savanna biomes, parrots in jungles excluding bamboo jungle and jungle, cats in swamp huts and witches, it is 1.
For parrots in bamboo jungles and Jungle, polar bears, squids in lukewarm oceans, pandas and dolphins, it is ane-two.
For donkeys in plains biomes, ocelots and pufferfish, it is 1-3.
For endermen except in the End and in nether wastes, and squids except in lukewarm oceans, information technology is i-four.
For rabbits and blazes, it is 2-three.
For guardians, foxes, zombified piglins in crimson forests and striders, it is 2-4.
For turtles, it is two-v.
For horses, information technology is 2-6.
For piglins and hoglins in cerise forests, it is 3-four.
For Cod it is iii-6.
For llamas, it is four-vi.
For mooshrooms, it is 4-8.
For wither skeletons and skeletons, in nether fortresses, information technology is v.
For bats and tropical fish, information technology is eight.
For every other mob, it is 4.

Pack spawn location

For all dimensions, structure-based spawns have priority over biome for hostile spawns. This means that in a swamp hut, pillager outpost, under fortress (outer bounding box only when there is under bricks beneath it‌^{[ JE simply ]}), and body of water monument, one sees just the corresponding hostile mobs for that structure within that construction.

In the Overworld, this depends on the location:

Jungle biomes take a college chance to spawn chickens.‌^{[ Java Edition only ]}
Badlands biomes spawn merely hostile mobs and bats.
River and frozen river can spawn only drowned, squid, and salmon underwater.
Bounding main biomes do not spawn passive mobs. They spawn drowned, and the other hostile mobs. Frozen oceans do not spawn dolphins, but do spawn polar bears.
Snowy Plains biomes do not spawn animals other than polar bears and rabbits.
Swamp huts spawn merely witches, cats, and bats.
Ocean monuments spawn guardians, other water mobs and bats.
Pillager outposts spawn pillagers, other passive mobs and bats.
All other overworld biomes spawns common animals and mutual monsters, as well as slimes, dependent on spawn atmospheric condition.

In the Nether:

Skeletons, wither skeletons, magma cubes, zombified piglins, and blazes spawn inside under fortresses.
Ghasts spawn in nether wastes, soul sand valley and basalt deltas.
Zombified piglins and piglins can spawn in nether wastes, while magma cubes spawn primarily in basalt deltas and sometimes in nether wastes.
Ghasts, magma cubes and hoglins spawn regardless of low-cal level.
Hoglins and piglins spawn at a higher rate anywhere in the cerise wood biome.
Endermen spawn more frequently in the warped woods biome, merely not in the ruddy forest.
Skeletons and ghasts spawn more frequently in the soul sand valley biome.

Spawn conditions [ ]

Whether a spawn condition fails differs from the above decision if the game tries to spawn them in that biome. For instance, dolphins can have pack spawns that occur inside of frozen body of water and deep frozen ocean biomes, but no other biomes. These rules use to variants of the same mob, such as baby zombies and spider jockeys.

Each individual spawn attempt succeeds simply if all of the following conditions are met:

At that place must be no players or the earth spawn indicate within a 24 radius block altitude (spherical) of the spawning block
The number of loaded mobs of that type must be less than the mob cap for that type. (I.east. the corresponding mobcap must not be full)
The mob's collision box upon spawning must not collide with some other standoff box. A mob cannot spawn within of anything that would collide with it upon spawning.
The mob's collision box must not intersect with a solid cake.
For all mob types excluding passives and fish, spawns fail unless within a 128 radius block sphere around the player. For fish, spawns neglect unless inside a 64 block radius of the histrion. ^[2]
/gamerule doMobSpawning is true
For non-aquatic mobs, the spawning block and the block higher up that cannot exist rails, powered rail, detector rails, activator track, redstone components, wither roses (except for wither skeletons) or sugariness berry bushes (except for foxes).

Hostile mobs

The difficulty must not exist Peaceful, excluding piglins and hoglins
This also affects ocelots^[three]
For all hostiles other than guardians, drowned, and phantoms:
- the block directly below it must accept a solid, opaque, elevation surface (this includes upside downwards slabs, upside down stairs, and others) or be soul sand or a slime block.
- the block direct below information technology must not be boulder, barrier, or‌ any type of trapdoor‌ or drinking glass.
- The mob'southward standoff box must non collide with whatsoever liquid.
- The block above the spawning block must be transparent
For slimes from swamp biomes, creepers, skeletons, wither skeletons, witches, zombie villagers, husks, strays, drowned and spiders:
- The light level divided by viii is the chance of a spawn failing; thus mobs spawn at calorie-free level 7 and below.
  - In the Overworld, this follows internal skylight level as well as cake light level. Internal light level is affected by thunderstorms.
- Spawns with heaven access in the Overworld have an additional 50% failure rate when the light level is 15.
- If it is a slime from a swamp biome, and then.....
  - the spawning block must be in a swamp biome
  - the spawning cake be on level 51 through 69 inclusive
  - chance of failure based on the phase of the moon
  - with a 50% chance of failure.
- If it is a husk or devious, then....
  - The location of the spawn must have sky access.
- If information technology is a skeleton in a Under fortress, and then...
  - There is an 80% take a chance of spawning a wither skeleton instead.
- The calorie-free checks in the full general hostile mob cheque don't employ to:
  - Slimes from slime chunks (encounter the slime folio for details), which spawn when:
    - the spawning block is below level 40.
    - with a 90% chance of failure.
  - If it is a ghast, so...
    - With a 95% risk of spawn failure.
  - If it is a magma cube or hoglin, and then...
    - the cake below must not exist a nether wart block.
  - If it is a bonfire, and then...
    - the light level must be xi or darker.
  - If it is a piglin or zombified piglin, then...
    - the low-cal level must exist 11 or darker.
    - the block beneath must non be a under wart block
  - If it is a polar bear, then...
    - The light level must be greater than 8.
    - The block beneath must be ice.
    - The spawning cake must exist in a frozen ocean or deep frozen ocean.
  - If it is a blaze, wither skeleton, skeleton, magma cube or zombified piglin in the fortress external bounding box:
    - the block beneath must be nether bricks.
  - If it is an ocelot, then.....
    - the spawning block must be level 62 or higher.
    - the block directly beneath the spawning cake must be grass or leaves.
    - at that place is a ¹⁄₃ chance for the spawn to fail in jungles, 100% risk in bamboo jungles and jungle edges.
For guardians and drowned:
- The spawning block and the block beneath must be water, including waterlogged blocks and bubble columns.
  - If it is a guardian, then...
    - 95% chance of failure if the spawning block has sky exposure (details).
  - If it is a drowned:
    - It has a ¹⁄_forty chance to succeed in oceans, while a ¹⁄₁₅ chance to succeed in rivers.
    - In body of water biomes, drowned spawn at a height less than 5 blocks beneath ocean level.

Passive mobs

The mob's standoff box must not collide with any liquid.
- if it is not a strider, the light level of the spawning block must exist ix or brighter.
  - If it is a mooshroom, then.....
    - the cake directly below the spawning block must be mycelium.
  - If information technology is a turtle, then.....
    - the cake directly below the spawning block must be sand.
    - the spawning block must be level 67 or lower.
  - If it is a ocelot, and so....
    - Spawn has a 33% chance of failure.
    - the block straight beneath the spawning cake can either be grass cake or leaves.
  - If information technology is a parrot, then....
    - the cake direct below the spawning cake can either be grass block, leaves, or log.
  - If information technology is a rabbit, and then....
    - the block direct beneath the spawning block must either be grass block, snow^[iv], or sand.
  - For all others then.....
    - the cake directly below the spawning block must be a grass block.
- If it is a strider, so.....
  - Spawn attempts with lava above check upward as long every bit there is nonetheless lava for if they can successfully spawn in a lava cake with air on height.
  - The spawning block must be at y level 31 or lower.

Aquatic mobs

For squid, cod, salmon, pufferfish, tropical fish or dolphin:

the spawning block and the block below must be water
the block in a higher place must exist h2o and cannot be waterlogged
- If it is cod, salmon, pufferfish, tropical fish, then the water ambience mobcap must not be total
- If it is squid or dolphin, the water brute mobcap must non exist full
- *If it is a squid, and so...
  - - the spawning cake must be betwixt level 46 and 62, inclusive
    - the spawning block must be in an ocean or river
  - If it is a dolphin then.....
    - the tiptop of the spawn must be greater than 45 and less than body of water level (62).
    - the spawning block must be in an ocean or deep ocean

Ambient mobs

The mob'south standoff box must non collide with any liquid.
- If it is a bat, then...
  - the spawning block must be at level 62 or below.
  - If the existent-time twenty-four hours is betwixt October 20 and November three, then the calorie-free level must be 7 or darker. Otherwise, the lite level must be 4 or darker.

If all of these conditions are met then the mob is spawned.

Spawn costs

Locations that do non have spawning potential reliant spawns are marked by wart blocks or netherrack

Endermen within warped forests, and skeletons, ghasts, striders and endermen in soul sand valleys increase a charge within the spawn cost. If the charge is high enough in an expanse, any mob that adds to the charge does not spawn.

Charge raising mobs add the charge in a sphere effectually them. This occurs farther the accuse cancels spawns. Mobs' charge spheres don't cover each others' up, but stack, affecting areas further away, given the mobs are in proximity. The accuse set by ane mob is the aforementioned throughout the block the mobs resides in and the cake southward, eastward, and southeast adjacent to it. From that, accuse prevents spawns inside 6 blocks straight between them or 4 blocks along a diagonal, given no other charge affecting mobs are present.

Due to the spawning suppression in soul sand valleys and warped forests, a larger-than-usual amount of mobs spawn in any space outside of these biomes, including in Nether fortresses.

Notes

Buildings surrounded by air spawn more mobs inside than underground rooms considering packs that spawn exterior of the building can spawn mobs inside information technology. The mob caps tend to exist reached in seconds.
If the thespian's view distance or the server view distance in multiplayer is at 9 or below, mob spawning is severely reduced (or they despawn too quickly), and may outcome in the player encountering no mobs at all. Prepare the view distance to 10 or higher to ensure mobs spawn correctly.

Bedrock Edition [ ]

Environmental spawning in Bedrock Edition shares broad similarities to natural spawning in Java Edition: mobs spawn in a radius around the player subject to block weather, lighting conditions, biome conditions, naturally generated structure weather condition, and caps. Many mobs spawn in groups (chosen "packs" in Java and "herds" in Bedrock). One notable deviation from Coffee Edition is that near animals can spawn at lite level 7 or college rather than 9 or higher.

There are ii types of environmental spawns: cluster spawns and structure spawns. Structure spawns reproduce specific types of mobs at specific locations inside certain naturally generated structures, such every bit nether fortresses, swamp huts, etc. Cluster spawns business relationship for all other types of environmental spawns, including mobs that spawn individually (i.due east. not in a herd of ii or more). Both types of environmental spawns follow the aforementioned rules for spawn conditions and mob caps, except that structure spawns tin exceed the monster population cap by ane (see below).

Mob spawning in boulder edition happens within a spherical shell 24-44 blocks abroad from the thespian on simulation distance 4. It happens a quasi-spherical beat 24-128 blocks away from the thespian, restricted by a simulation distance and/or to roughly 96 blocks horizontally, on simulation distances 6 and college. This means that mobs tin can spawn directly to a higher place or below the player (for example, phantoms in the sky or zombies underground). Mobs can spawn only in chunks that are being ticked. At that place is a ^xi⁄₂₀₀₀ run a risk of the mob spawning algorithm attempting to run per chunk, per tick.

Bedrock Edition mob cap [ ]

There are 3 mob caps that impact environmental spawning: a global mob cap, population command caps for full general mob types, and density caps for specific mob types. The global mob cap is set up at 200 regardless of difficulty. The global mob cap affects only environmental mob spawning, and does not touch on mobs spawned through breeding, spawn eggs, the /summon command, spawners, or whatever other blazon of mob spawning. Chickens created by thrown or dispensed eggs are counted in the global mob cap. Only mobs that have spawn rules count toward the global cap (i.due east. armor stands and minecarts do not take upward cap space). In add-on, mobs that are within ticking areas (both those effectually players and those set manually using the /tickingarea command) count toward the global mob cap; mobs not ticked practice not count toward the global mob cap.

The population control caps limit how many mobs of each type and category tin can spawn within a 9 clamper past 9 chunk square region surrounding the chunk in which the spawn effort is made. Mobs in chunks outside a ticking area even so count toward population command counts as long as they were previously loaded (i.e. within simulation altitude at some fourth dimension) after relogging. The population control caps are carve up into two singled-out categories: a cap for surface mobs, and a cap for cavern mobs. Cave mobs do non count toward the surface mob cap, and surface mobs do not count toward the cave mob cap. Whether a mob counts equally a surface mob or a cavern mob is determined by where or how information technology spawned, not where information technology happens to be at the moment. For cluster spawns, those that spawn on the highest spawnable cake at a given coordinate count toward the surface cap, and whatever that spawn beneath the highest solid or non-solid but spawnable (eastward.g. ice or upper slab with air to a higher place) cake count toward the cave cap. Structure-spawned mobs and converted mobs (i.e. drowned converted from zombies, witches from villagers, zombified piglins from pigs, and medium and small slimes from killed larger slimes) always count toward the cave cap, and spawner-spawned mobs always count toward the surface cap.

There are five categories of mobs: ambient, animal, monster, pillager, and water_animal. The population control cap for each category and location of mob in each dimension is equally follows (* denotes values that are coded in the game just not really used by any mobs):

Population control caps
Category	Location	Overworld	Under	The End
Ambient	Surface	0	0	0
Ambient	Cave	2	0	2*
Animate being	Surface	iv	0	4*
Animate being	Cave	0	iv	0
Monster	Surface	eight	0	x
Monster	Cavern	viii	sixteen	8*
Pillager	Surface	8	0	viii*
Pillager	Cavern	8	0	8*
Water_Animal	Surface	36	0	36*
Water_Animal	Cavern	0	0	0

Some specific mobs types as well have their ain density caps. The density caps limit the number of those mobs to some corporeality beneath the applicative population control cap. Density caps are checked in the same manner as the population command caps. Caps are below (n/a indicates that the mob does non spawn in that environment at all).

Mob Density Caps
Mob	Surface cap	Cave cap
Cod	20	north/a
Creeper	v	unlimited (population control cap however applies)
Dolphin	5	due north/a
Drowned	v in ocean 2 in river	n/a
Ghast	due north/a	2
Phantom	5	northward/a
Pufferfish	iii	n/a
Salmon	ten in sea 4 in river	due north/a
Squid	iv in ocean 2 in river	due north/a
Tropical Fish	twenty for preset blueprint xx for random pattern	n/a

Bedrock spawn conditions [ ]

The following rules apply to most mobs:

Mobs spawn at a distance from the role player that depends on the globe'southward simulation distance:
- Simulation distance iv: between 24 and 44 blocks spherical radius from the player.
- Simulation distance half dozen and upwards: betwixt 24 and 128 blocks spherical radius from the player, only express horizontally by simulation distance and coding that restricts the spawning algorithm from running in chunks whose center exceeds 96 blocks from the role player.^[five]
The bottom office of the mob (i.e. the anxiety of a standing mob, or the whole body of a mob <= one block tall) tin spawn only in an air cake, or for water mobs in a water cake. A few naturally-generated, non-motility-blocking blocks such as grass and flowers are ignored for this dominion.
There must be a cake with a full, solid top surface nether the spawn location for the mob to spawn on. (I.due east. mobs cannot spawn on carpets, lower slabs, fences, right-side-up stairs, redstone repeaters, chests, etc.)
Mobs cannot spawn on transparent full blocks like glass and leaves.
For mobs that tin can spawn floating in water or flying in air, the block that is checked for spawning is the h2o or air cake immediately above the first solid acme surface block beneath the spot where the mob would spawn. (So for example, phantoms cannot spawn over a field covered in carpet, and fish cannot spawn in an ocean where bottom slabs cover the body of water floor.)
Most overworld monsters cannot spawn if the sky light level is greater than or equal to 7 or the block calorie-free level is greater than 0.
Well-nigh overworld animals cannot spawn if the (combined) light level is less than 7.

Cluster spawning [ ]

Cluster spawning happens in two stages: first effort to spawn surface mobs, then attempt to spawn cave mobs. Before spawning, the population control cap is calculated based on the 9 chunk x 9 chunk foursquare area surrounding the current chunk. Spawning begins by picking a random 10 and Z location inside the chunk currently beingness evaluated. The Y coordinate is determined by starting at the world pinnacle and searching down for a solid-pinnacle-surface block with a non-spawn-blocking block above it. The outset such block that is found is considered to be the surface, and the algorithm attempts to spawn a surface mob herd. However, if the algorithm finds a solid block earlier finding a spawnable solid-meridian-block (east.g. if it finds a tree torso directly under leaves), it does not make any surface spawn attempt. The algorithm and then continues to search downward for the next suitable block with a non-spawn-blocking block above it. When a block meeting the criteria is found, the algorithm attempts to spawn a cave mob herd at that block location. Cave spawn attempts keep until the Y coordinate reaches the world lesser, and exercise not end even if a cave herd was spawned.

Surface and cave cluster spawn attempts so go through the following steps to effigy out what mob to spawn and how many:

Picks a random mob.
- If the current spawn location is in a liquid, choice a random water mob.
- If the light level is 7 or higher, in that location are no other blocks above the current location, and the electric current location is a grass block, pick a random brute mob.
- Otherwise, spawn a monster mob.
Picks a random number of mobs to spawn in the herd. Each mob tin accept its own min and max herd size, and the herd size can depend on difficulty and biome.
Make sure the spawn location has suitable spawn weather condition.
Limit the number of mobs spawning based on the global mob cap. No mobs spawn if the mob count already meets or exceeds the mob cap.
For each mob to spawn, bank check that spawning information technology would not exceed the population control cap or mob density cap.
- If spawning the mob would not exceed the population command or mob density caps, then the probability of a mob spawning can exist calculated using the formula: (mob density cap - current mob density count) / mob density cap
Finally, try to spawn the mob in the earth.
- Spawning the mob tin can fail; for example, if spawning information technology would crusade it to spawn within of a block or part of a wall.

Construction spawning [ ]

Structure spawn attempts occur at specific relative X and Z coordinates in naturally generated structures, known as "difficult-coded spawn spots". The structures that accept hard-coded spawn spots include swamp huts, sea monuments, pillager outposts, and under fortresses. Whenever a successful cluster spawn endeavor occurs inside a chunk that contains a hard-coded spawn spot, the ecology spawning algorithm also attempts a structure spawn. (Note that a "successful try" hither means that a spawnable block was found, fifty-fifty if the spawn was then blocked by low-cal level check or mob cap cheque.) The structure spawn attempt follows the same rules and steps described higher up for cluster spawning, with the post-obit changes:

Instead of starting at world height and searching down to boulder at the specific X and Z location, the search begins and ends at a specific Y values determined by the type of structure. Structure spawn attempts occur only on the first spawnable block plant (i.due east. the highest spawnable cake) within that range.
The mob picked depends on the structure: swamp huts spawn witches, ocean monuments spawn guardians, pillager outposts spawn pillagers (including patrol captains), and nether fortresses spawn skeletons, wither skeletons, blazes, and magma cubes.
The population control caps are finer i higher for structure spawn attempts.

Other types of spawning [ ]