After many many requests...
Survival PVE now has Disguise Craft!!! (Mob disguise)
Here is a list of who gets what:
Iron: Pig, Cow, Bat, Spider, Zombie
Gold: Wolf, Ocelot, Slime, Skeleton, Cavespider
Lazuli: Zombie Pigman, Wither Skeleton, Villager, Creeper
Emerald: Horse, Enderman, Witch, Blaze, Ghast ,Magmacube
Diamond: Witherboss, Enderdragon, Silverfish, Mushroomcow, Spiderjockey, Giant
Just type '/d' to see your available disguises! Have fun!