Possible entityName values

entityName	Description
Players and Wolves
player.<playerName>	Player called <playerName>. (Example: player.t3hk0d3)
group.<groupName>	Any member of <groupName> group. (Example: group.admins)
animal.wolf	Wild wolf
animal.wolf.<playerName>	Wolf tamed by <playerName> (Example: wolf.t3hk0d3)
animal.ocelot	Wild ocelot (cat)
animal.ocelot.<playerName>	Tamed cat (ocelot) Example: animal.ocelot.t3hk0d3
npc.villager	Not related to Bert
snowman	Not related Frosty
irongolem	Defenders of the Villagers
Animals
animal.chicken	cluck-cluck
animal.cow	Mooo
animal.mushroomcow	Mooshroom
animal.pig	Pig
animal.sheep	Sheep
animal.squid	Squid
Monsters
monster.blaze	Pyros, every one...
monster.cavespider	Worse than spiders
monster.creeper	SssssSSSssss
monster.enderman	Don't look at them directly
monster.ghast	AWWWWWWW
monster.giant	Giant Zombie
monster.pigzombie	Pig Zombie, omg
monster.silverfish	Beware the horde
monster.skeleton	Them bones, them dry bones...
monster.slime	Covers regular slimes and magma cubes
monster.spider	Yep, this is Spider, he is annoying.
monster.zombie	Brainzzzz...
Environment
starvation	Num nums, or lack there of
fire	Initial fire damage
lava	Lava damage. Add firetick too for full protection.
firetick	Damage from touching fire (or after stepping into lava) over time.
blockexplosion	Damage from TNT explosion.
projectile.arrow	Arrows shot at player
drowning	Failing to grab a breath of fresh air
fall	Jumping without a parachute
suicide	Committing Seppuku
poison	Poison potions