• Mobs have a doubled "follow range" (but not "aggro range")
• Mobs that have a flee entity goal don't flee if the entity has less than half health
• Most hostile mobs are now hostile to villagers
• Mobs riding others path find with the accumulated dimension to avoid going through blocks

Arthropods General

• Don't get fall damage
• Larvae spawn with a bonus speed depending on local difficulty

Cave spider

• Cave spider can spawn naturally in caves, the deeper the more common
• Cave spider jockey has a slight chance to spawn

Silverfish

• Infested stone can be everywhere, not only under mountains

Skeletons General

• Runs away from the player
• Knows a bit how to swim

Skeleton

• Can spawn with spectral arrows

Stray

• Shoots freezing arrows
• Can spawn in any cold biome

Wither skeleton

• Can spawn holding a bow if adult, so they will shoot flame arrows
• Carry an iron sword instead of a stone one

Skeleton horse

• Spawn different kind of horsemen
  • One is a regular Skeleton with spectral arrows
  • One is a Stray
  • One is a Bogged
  • One is a Wither Skeleton holding a bow
• Moves faster when ridden by mobs

Undead General

• Steals life on attack
• Ignore other undead mob attacks

Phantom

• Can target and fly through blocks
• Is repelled by light (luminance level 10 or higher)
• Can spawn in End Cities

Zombies General

• Has a better knockback resistance
• Is more likely to call reinforcement
• Can call reinforcement of the same Zombie type
• Can spawn with attributes variations when adults
  • Caller have a call reinforcement bonus
  • Runner have a speed bonus
  • Tank have a health bonus
  • Unstoppable have a knockback resistance bonus
• Baby zombies can spawn on top of each other

Husk

• Is no longer affected by fire damages

Drowned

• Spawns more often with a trident as in Bedrock
• Increased velocity in water
• Baby drowned can spawn riding a guardian

Zombified Piglin

• Has a slight chance to spawn in a "brute" variant
  • Holds a golden axe instead of a golden sword
  • Targets players on collision

Zombie horse

• A Zombie Horse trap can spawn when it thunders
  • One is a Zombie with an iron sword
  • One is a Zombie Villager with an iron axe (and a guaranteed diamond chestplate)
  • One is a Husk with an iron shovel
  • One is a Drowned with a trident
• Moves faster when ridden by mobs

Pillager

• Can spawn as a Pillatrooper
  • Can fly up in the air with a firework rocket
  • Shoot quicker valve of arrows when airborne
  • First shot guaranteed to be a firework rocket, with a chance to continue
• Increased chance for piercing enchantment on their crossbow

Evoker

• Immune to arrows
• Has more health

Illusioner

• Can spawn in Mansions

Vindicator

• Can have a speed bonus depending on local difficulty
• Can spawn in patrols

Ravager

• Can spawn in patrols, with a pillager riding it or not

Witch

• Flees the player
• Slightly increased spawn rate

Creeper

• Doesn't get damage from explosions. Instead, they ignite
• Its explosion deals mining fatigue and weakness effects, duration depending on your distance with the creeper

Guardian

• Can spawn naturally (rarely, like dolphins)
• Attack silently other mobs

Slime

• Can spawn with 1 bigger size depending on local difficulty
• Can fuse with another same-sized slime on collision
  • Can fuse only once, its children won't be able to fuse again
• Turns into Magma Cube when in lava in the Nether

Vex

• Can spawn naturally in dark forest
• Dies if its summoner dies

Blaze

• Sets entities on fire on attack, when on fire
• Has a reduced follow range

Ghast

• Has a lot more health

Magma cube

• Sets on fire on collision, fire duration depends on size
• Turns into Slime when in water in the Overworld

Piglin

• Can spawn riding a hoglin, spawn rate depending on local difficulty
• Are hostile to players who don't wear full golden armor
  • You can choose how many pieces of golden armor you need to wear in the configs

Enderman

• Can deal blindness on attack

Endermite

• Chorus plants are infested with endermites
• Teleports player on attack, similarly to chorus fruits

Shulker

• Projectiles can cancel levitation

Ender Dragon

• A Phantom can spawn when an Ender Crystal is destroyed
• Endermen can target nearby players when a player is close to the dragon when sitting
• Ender Crystals respawn at ender dragon's health thresholds

Wither

• Has more health
• Spawns (once) 3-4 wither skeletons on half health as in Bedrock
• Summons an explosion on half health, similarly as when spawned
• Makes the weather stormy until death