Bukkit

The Mob Update
You want mob heads? We got mob heads - 33 of them! Friendly ones, neutral ones, hostile ones! We've got 'em all over in version 1.1!

Featuring the classic acts of:
Chicken, Cow, Fox, Mooshroom, Ocelot, Pig, Sheep, Squid, Villager, Wandering Trader,
Spider, Cave Spider, Enderman, Zombie Pigman, Iron Golem, Dolphin,
Blaze, Creeper, Drowned, Elder Guardian, Ghast, Guardian, Husk, Magma Cube, Pillager, Skeleton, Slime, Stray, Vex, Witch, Wither Skeleton, Zombie and of course, Zombie Villager.