No. In the nearly four years this game has been out, no one has ever managed to kill Hogger.
It used to be said that a million monkeys on a million typewriters would eventually bash out a Shakespearian sonnet, and now, thanks to the internet, we know that isn't true. - Robert Wilensky
Hogger is actualy the hardest world boss to defeat, i heard he has a respawn time of over 2 years.
I once tryed Hogger with a 40 man group after we downed Doom Lord Kazzak, but our T5 tank instantly died.
So hogger is acctualy believed only to be completed after WoTLK comes out (maybe).
Imagine if anyone could kill him now, imagine the loot he would drop! i bet it would be at LEAST 14 copper!
What ashame you meanies, i teamed up with a level 11 priest and we killed him pretty easy so yes you can kill him, i would suggest try and find someone to help you!