gistfile1.txt

stat.jump
stat.drop
stat.deaths
stat.mobKills
stat.pigOneCm
stat.flyOneCm
stat.leaveGame
stat.diveOneCm
stat.swimOneCm
stat.fallOneCm
stat.walkOneCm
stat.boatOneCm
stat.sneakTime
stat.horseOneCm
stat.sleepInBed
stat.fishCaught
stat.climbOneCm
stat.aviateOneCm
stat.crouchOneCm
stat.sprintOneCm
stat.animalsBred
stat.chestOpened
stat.damageTaken
stat.damageDealt
stat.playerKills
stat.armorCleaned
stat.flowerPotted
stat.recordPlayed
stat.cauldronUsed
stat.bannerCleaned
stat.itemEnchanted
stat.playOneMinute
stat.minecartOneCm
stat.timeSinceDeath
stat.cauldronFilled
stat.noteblockTuned
stat.noteblockPlayed
stat.cakeSlicesEaten
stat.hopperInspected
stat.shulkerBoxOpened
stat.talkedToVillager
stat.enderchestOpened
stat.dropperInspected
stat.beaconInteraction
stat.furnaceInteraction
stat.dispenserInspected
stat.tradedWithVillager
stat.trappedChestTriggered
stat.brewingstandInteraction
stat.craftingTableInteraction
stat.drop.* (* = any item)
stat.pickup.* (* = any item)
stat.useItem.* (* = any item)
stat.killEntity.* (* = any entity)
stat.craftItem.* (* = any item)
stat.breakItem.* (* = any item)
stat.mineBlock.* (* = any block)
stat.entityKilledBy.* (* = any entity)

The entity names can be found at http://wiki.vg/Entities#Mobs