Horse Armor

Horse armor is an item, a special type of armor that can be given to a horse to wear. Placing armor on a horse will cause any previous armor to be removed and drop as an item. Horse armor has infinite durability and can be found in dungeons as well as randomly generated chests in the Nether fortresses, in Desert Temple chests and in abandoned mineshaft (minecart) chests.

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

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

History
This is how horse armor was crafted pre-. The color wool did not matter and would not alter the armor's appearance whatsoever.

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 than iron, so it is worse, but horse armor has infinite durability).
 * Horse armor does not exist in leather or chain varieties.
 * You cannot breed horses if they have armor equipped.
 * Horse armor can only be found in dungeons, nether fortresses, abandoned mineshafts, and both types of temples.

Gallery
Pferderüstung Armure pour cheval 馬鎧 Конская броня 马铠