Saddle

A saddle is an item that can be placed on any rideable mob except for llamas and skeleton horses.

Fishing
Saddles can be obtained as a "treasure" item from fishing with a base chance (without fishing rod enchantments) of 0.8%.

Trading
Master-level leatherworker villagers have a 50% chance to sell a saddle for 6 emeralds as their trade.. This trade is always offered in Java Edition.

Drops
Any mob that the player equips with a saddle drops the saddle upon death. Ravagers always drop one saddle when killed.

A strider may spawn being ridden by a zombified piglin, which causes it to spawn wearing a saddle. This saddle has an 8.5% chance to drop, increased by 1% per level of Looting.

Usage
Saddles may be used to ride striders, horses, donkeys, mules, and pigs. An equine mob equipped with saddle is rendered wearing a bridle along with the saddle.

Although ravagers are equipped with saddles and sometimes ridden by other mobs, the player is unable to ride ravagers.

a saddle on a pig equips the pig with the saddle, allowing the player to ride the pig. Controlling the pig requires using a carrot on a stick. Killing the pig is the only way to retrieve the saddle. Striders behave similarly when equipped with a saddle, but require a warped fungus on a stick to be controlled instead.

Tamed horses, donkeys, and mules can be ridden without a saddle, but a saddle is required to control them. Once tamed, they can be equipped with a saddle by placing it in their inventory, which can be opened by pressing while holding a saddle or. The saddle can be unequipped by removing it from the specific inventory slot.

Trivia

 * A saddle is considered "armor" by the game, but the value of protection to the pig is zero.
 * A saddle can still be seen if the pig is invisible.
 * Punching a pig or horse while holding a saddle causes the mob to wear the saddle, and it is removed from the player's inventory, even in Creative mode.
 * When riding a saddled mob the extra health bar is actually heart shaped saddles.