Leather

Leather is an animal skin used to make armor and books.

Drops from animals
Cows, mooshrooms, horses, donkeys, mules and llamas drop 0-2 pieces of leather upon death.

Fishing
Leather can be obtained as a "junk" item from fishing.

Trading
Leatherworker villagers will buy 9–12 leather for one emerald.

Novice-level leatherworker villagers buy 6 leather for one emerald as one of their trades.

Repairing
Leather armor can be repaired with leather in an anvil.

Issues
Kůže Leder Cuero Cuir Bőr Cuoio 革 가죽 Leer Skóra Couro Кожа 皮革