Riding

Riding (aka. mounting) is the behavior that allows an entity to mount another entity.

Behaviors
Riding connects one entity to another. An entity riding another entity is called a passenger, and an entity being ridden is called a mount (aka. vehicle). An entity can be both a passenger and a mount at a time if it is riding another entity while being ridden by other entities.

An entity can only ride at most one entity at a time. Most entities support only one passenger, but boat, bamboo raft and camel can support two passengers at a time. $$, by modifying entity NBT through commands, an entity may be ridden by any number of entities. $$, a baby hoglin can support 3 baby piglins, which looks like they are stacked one by one. However, $$, baby piglins ride each other and indeed stacked one by one, instead of all riding on the hoglin.

The collision and movement of a mount is not affected by its passengers, so the accessible position for the mount may put the passengers into danger, for example, making the passenger's head inside of a block and causing suffocation.

When a player leaving the world, all the entities that is ridden by it also disappear from the world, and will respawn with the player when the player rejoins the world, unless the affected entity has another player passenger.

$$, marker cannot be ridden.

$$, when a leashed mob starts riding, it drops the lead. $$, a leashed mob cannot start riding unless using command, and when staring riding, it doesn't drop the lead.

Passengers
Passengers have the following behaviors:


 * The position of a passenger is fixed on its mount, that is, the position and movement of a passenger cannot be affected by any other gameplay features.
 * Passengers have no collision with entities and blocks.
 * Passengers cannot be moved by knockback, explosion, fishing rod, and trident with riptide enchantment.
 * $$, passengers cannot be teleported by chorus fruit and end gateway.
 * $$, when a passenger goes into an end gateway, it is teleported with its mount.
 * When a shulker is a passenger, it cannot teleport on its own. $$, an enderman cannot teleport on its own either.
 * $$, passengers cannot be teleported by . $$, passengers dismount when teleported by.
 * Passengers cannot be transported by nether portal and end portal.
 * Passengers do not calculate the falling height. When starting riding, the falling height is reset.
 * When a player is a passenger, it cannot interact with its mount.
 * When a player is a passenger, it cannot interact with other passengers on the same mount as its.
 * When a player is a passenger and the mount is a mob or an armor stand, the health bar of the mount is displayed on the player's HUD in the form of . $$, the hunger bar is replaced by it in Survival or Adventure mode.

Mounts
Mounts have the following behaviors:


 * Mounts cannot be transported by Nether Portal, End Portal.
 * $$, mounts cannot be teleported by end gateway.
 * When a mount receives falling damage, all passengers also receive falling damage.
 * $$, if a mount is immune to falling damage, the damage is not passed to passengers.
 * $$, even if a mount is immune to falling damage, the damage is still passed to passengers.

Controlling
The movement of the following mounts are controlled by the player when being ridden by it:
 * Saddled horses
 * Saddled donkeys
 * Saddled mules
 * Saddled camels
 * Pigs can controlled by players holding carrot on a stick.
 * Striders can controlled by players holding warped fungus on a stick.
 * Saddled skeleton horses / Adult skeleton horses
 * Saddled zombie horses
 * $$, ravagers are controlled by players when being ridden, but never move
 * $$, ravagers are controlled by players when being ridden, but never move
 * $$, ravagers are controlled by players when being ridden, but never move

$$, above entities except pigs and striders can also be controlled by armor stands when being ridden, but never move.

$$, though on rails receive the input from its player passenger, they are not regarded as being controlled in game. Though do not receive the input from its player passenger, they are regarded as being controlled in game.

$$, mobs being ridden by a player never move on their own accord unless being controlled. $$, mobs can wander around freely when ridden by a player not controlling it.

$$, the movement of a mount is controlled by its passenger, if both the mount and the passenger are mobs (not players). However, there are some exceptions:
 * Pigs cannot be controlled
 * Striders cannot be controlled
 * Unsaddled horses cannot be controlled
 * Unsaddled donkeys cannot be controlled
 * Unsaddled mules cannot be controlled
 * Unsaddled skeleton horses cannot be controlled
 * Unsaddled zombie horses cannot be controlled
 * Unsaddled camels cannot be controlled
 * Llamas cannot be controlled
 * Trader llamas cannot be controlled

$$, whether the passenger or the mount controls the movement is determined by the priority of their AI goals. For example, when a zombie rides a pig, the pig controls the movement when they are idle; but the pig cannot follow players holding a carrot even when the zombie is idle; the pig controls the movement when it is breeding and the zombie is idle; the zombie controls the movement when it targets a player even when the pig is breeding.

For an entity that is riding by multiple passengers, only the front passenger has control over the mount. If a player and other entities ride it at a time, the player becomes the front passenger.

$$, mobs cannot float on water when they are controlled. They are submerged in the water instead. $$, whether the mount floats on water is determined by the priority of their AI goals.

The following mounts have the ability of "jumping charging". When players ride them, the experience bar on HUD will be replaced by jumping charging bar:
 * Saddled horses
 * Saddled donkeys
 * Saddled mules
 * Saddled skeleton horses / Adult skeleton horses
 * Saddled zombie horses

When a player ride the following entities, pressing opens the interaction interface of these creatures instead of the normal item bar interface:
 * Tamed horse
 * Tamed donkey
 * Tamed mule
 * Tamed llama
 * Tamed trader llama
 * Camel
 * Tamed Skeleton Horse
 * Tamed Zombie Horse

Dismounting
Mobs usually cannot leave their mounts on their own AI (there're some exception, e.g. baby piglins stop riding baby hoglins when being hurt), but there are many ways to make passengers leave their mounts:
 * When the passenger is a player, the player uses control.
 * When the passenger is a player, the player starts sleeping by using on a bed.
 * When the passenger is a player, the player starts riding another mount.
 * When the mount is dead or destroyed.
 * When the passenger starts being leashed with a lead.
 * When riding chicken, pig, ravager, spider, strider, horses, donkeys, mules, zombie horses, llamas, trader llamas and camels under water, being driven off by them. $$, this is controlled by entity tag.
 * Being driven off by the mount (e.g. untrained horses, donkeys and llamas, underwater boats, minecart passing a powered activator rail, etc.).
 * $$, When the passenger finishes eating a chorus fruit.
 * $$, when the passenger is pulled by fishing rod.
 * $$, when the passenger is teleported by.
 * $$, when the passenger is a piglin, and it converts to a zombified piglin.
 * Dismounting by command.

Riding by player
Players can ride the following entities by pressing on the entity:
 * Saddled pig
 * Saddled strider
 * Adult horse
 * Adult donkey
 * Adult mule
 * Tamed skeleton horse / Adult skeleton horse
 * Tamed zombie horse
 * Adult llama
 * Adult trader llama
 * Adult camel

Minecart
A mob can ride a minecart when pushing by a moving minecart on rails $$ or when colliding with a minecart $$. $$, armor stand can also be picked up.

Ender dragons, wardens, and withers cannot be picked up by a minecart. $$, sniffers and iron golems cannot be picked up either.

$$, unlike wardens, ender dragons can ride a minecart via command $$; withers cannot ride a minecart via  though a success message is returned.

Boat
Mobs can be picked up into a boat or a boat with chest when they collide with the side of the boat or boat with chest. $$, a boat being ridden by a player cannot pick up a mob. $$, mobs can be picked up by a boat being ridden by a player.

Mobs wider than the width of a boat cannot be picked up. Wardens, and withers cannot be picked up. $$, baby sniffers cannot be picked up either.

$$, Mobs wider than the width of a boat can also ride a boat via command. Unlike wardens, ender dragons can ride a boat via command $$; withers cannot ride a boat via  though a success message is returned.

Spider Jockey
Spider jockeys are the rare appearance of a spider or cave spider‌ being ridden by a skeleton, stray, or wither skeleton.

Chicken Jockey
Chicken jockeys are the rare appearance of a baby zombie, baby zombified piglin, baby zombie villager, baby husk, or baby drowned riding a chicken.

Jockey of baby zombie
$$, 15% naturally spawned baby zombies, baby husks, and baby zombie villagers try to find a mount when it tries attacking a villager, player, or iron golem, which can ride: • Adult chickens

•  Untamed ocelots

•  Untamed cats

•  Untamed wolves

•  Adult zombies

•  Adult husks

•  Adult zombified villagers

•  Adult zombified piglins

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•  Adult unsaddled pigs

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•  Adult untamed horses

•  Adult untamed donkeys

•  Adult untamed mules

•  Adult skeleton horses

•  Adult zombie horses

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•  Spiders that was not spawned as a jockey mount

•  Cave spiders that was not spawned as a jockey mount

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Skeleton Horseman
Skeleton horseman is a jockey consisting of a skeleton riding a skeleton horse. Skeleton horsemen spawn only from a "skeleton trap horse".

Baby piglin riding baby hoglin
Baby puglins play with baby hoglins, running around and riding upon them. Up to 3 baby piglins may stack on top of each other while riding a baby hoglin. ⇭⇭⇭⇭⇭, a baby hoglin can support 3 baby piglins, which looks like they are stacked one by one. However, ⇭⇭⇭⇭⇭, baby piglins ride each other and indeed stacked one by one, instead of all riding on the hoglin.

Strider or zombified piglin riding strider
For every strider that spawns, there is a 1 in 10 chance of an additional baby strider to spawn riding on top of the previous strider. Zombified piglins have a 1 in 30 chance of spawning on top of a strider.

Illager riding ravager
A ravager generated in raids may generate with a pillager, evoker or vindicator riding on it.

Command
command is used to make entities ride or dismount an entity.

Posture
The following passengers have riding posture when riding: •

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Witches, villagers, iron golems, and wandering traders do not have a riding posture although similar mobs do.

Gallery

 * Steve