Zombie

Classic
0.24_SURVIVAL_TEST: Zombies were the second mob to be added to Minecraft after humans. They could run as fast as the player. Zombies would occasionally appear wearing armor, but this had no protective effect on their health. When killed, zombies gave 80 points each to the player, but they did not drop their armor. They also had arm swinging animations when they attacked.

Indev
0.31: Zombies' armor was removed, as well as their arm swinging attack animations.

Feb 12, 2010: Zombies now catch on fire when exposed to sunlight.

February 18, 2010: Tweaked chances of catching on fire in sunlight.

Zombies now only burn when the sunlight level is greater than 7, and not due to torches at night.

February 19, 2010: Zombies dropped 0–2 feathers upon death. Before chickens were added in Minecraft, Notch confessed that he made zombies drop feathers because he had no idea what they should have dropped when killed.

Beta
1.8: Zombies now drop rotten flesh instead of feathers.