Horse Armor

Horse armor is an item, a special type of armor that can be given to a horse to wear. Horse armor has infinite durability and can be found in dungeons as well as Nether fortress chests, Village Blacksmith chests, in Desert Temple chests and in abandoned mineshaft (minecart) chests.

Horse armor can be applied by right-clicking on a horse and placing it in the second inventory slot to the left of the skin. This allows the armor to be applied, removed, or replaced at the player's leisure. Before the addition of the horse GUI after the release of 13w21a, horse armor could only be applied by placing it on the horse.

Horse armor is not enchantable, unless using an Anvil in creative mode. Enchanted horse armor will not have any effects on the horse.

Unlike player Armor, Horse armor only has one piece, where as player Armor has four.

Protection
There is a gradual increase in the defense given from a horse wearing the different types of armor:

History
Horse armour can't be crafted in the 1.6.1 update. because it will "encourage the players to explore". Horse armour can be found in dungeon chests, nether chests and villages.

Trivia

 * Unlike armor for players:
 * Horse armor does in fact become invisible when an invisibility potion is used.
 * Gold horse armor is more powerful than iron horse armor (this may be because player gold armor has less durability and protection than iron, so it is worse, but horse armor has infinite durability).
 * Horse armor does not exist in leather or chain varieties.

Gallery
Pferderüstung Armure pour cheval 馬鎧 Конская броня 马铠