Java Edition 12w03a

12w03a is the first snapshot for Java Edition 1.2.1, released on January 19, 2012, which adds jungle biomes and jungle trees.

Blocks

 * Jungle Leaves Revision 1.png Jungle leaves
 * Generates in jungle trees.


 * Jungle Log Axis Y JE1 BE1.png Jungle log
 * Slightly-mossy brown textured with horizontal bark.
 * Generates in jungle trees.

World generation

 * Biomes
 * Added jungle biome.
 * Thick canopy with jungle trees, vines, fern, and brightly-colored grass.

Blocks

 * Ladders
 * Regained collision box.


 * Vines
 * Are now climbable if the player was pushed into a solid block while next to them.

Items

 * Spawn eggs
 * Dispensers can spawn mobs when dispensing spawn eggs.
 * Spawn eggs are now stackable to 64.

Mobs

 * Wolves
 * Have new AI.
 * Can be bred by using chicken (raw or cooked), porkchops (raw or cooked), steak/beef, and rotten flesh when tamed.


 * Zombies
 * Have new path-finding AI.

General

 * Languages
 * Updated language files.