Minecraft wiki entry for Transportation_methods, associated text: Llamas, which spawn in Mountains and Savannahs, are notable for their ability to form a convoy if a llama is being lead by the player. However, since llamas cannot be controlled when mounted by any means, they serve better as item transportation in singleplayer (As they can be equipped with chests, with the amount they can carry being a randomly generated stat). However, if the player is playing with other users, they could ride on the llamas while one player leads.