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Warwick is best when it comes to sustaining within his jungle. His ganks before he gets his ult may seam weak, however if it is executed correctly, it can be devistating.

Pros
-Great Sustain
-Takes tower fast with attack speed boost to everyone
-Super Strong ganks with ultimate
Cons
-Ganks are different from typical junglers
-Slow jungle with no area of effect (getting a good leash will remedy this)
-Small mistakes send you way off

offence to incease attack speed and damage
12 Points in defense to improve smite, and take less damage from physical attacks
9 Points in utility for improved move speed and buff duration

Attack Speed marks, seals, and glyphs help Warwick clear his camps at high speed, it also allows for Madred's Bloodrazor to hit more often.
Movement Speed quints, greatly improve his early game ganks.

-The more you hit the more you heal! Does not apply to structures
-BIG mana burner here, it is great for finishing people off after your ultimate is done. Try not to spam it without mana regeneration of some sorts.
-Attack speed boost to you and those around you
-Gives move speed when you "smell" someone around you who is below half health, range and speed increases per level
-One of few suppressions in game, Madred's Bloodrazor will activate for every hit you land!

Maxing Hunters Call greatly improves jungle speed as it is the only physical damage steroid that you have. The second to max would be Blood Scent since Hungering Strike consumes a lot of mana and you won't always have blue buff.

Boots with 1 sight ward and 1 Health Potion allows great mobility and vision to those who needs, since his sustain is so great, the Health Potion is actually optional.
madred's razor improves Warwick's slow clear speed
beserker's greaves grants great attack speed and move speed for such a low price. Taking Dragon at this point is suggested.
Wriggle's Lantern gives even greater sustain to the King of Sustain
Madred's Bloodrazor allows you to destroy the health pools of bigger monsters like blue buff, red buff, dragon and baron. The percent damage also applies to your ultimate!
Wit's End grants good attack speed with the bonus of magic resist and magic damage.
Banshee's Veil goes great with your build for it can block that annoying enemy who always interrupts your ultimate.
Frozen Mallet adds a slow everytime you hit somone and gives 700 more hitpoints

I take Flash and Smite. Flash may be the thing you need to escape or catch up to land SUPRESSION SKILL GOES HERE TROLOLOLOLOLOLOLOLOLOLOL. Smite improves Warwick's slow jungle speed.
Hmm...Thats Good!
-Slows them to aid in escape or killing!
-Move Faster to catch up or run away with you tail between your legs...
Maybe
-Same as Quicksilver Sash, but is two better than one? Thats your choice
-Surprise your enemies when your health instantly jumps up!
-Improve ganking damage but no escape
-Get to wherever you need be in exchange for escape or catch up spells
Please Don't You'll Make Us Cry
-What happened to your Wriggle's Lantern
-There is a blue buff that should take whether its your teams of theirs
-You are not laning, what are the chances you will just happen to see a seige minion?
-Go Troll somewhere else
-Not bad but long cooldown and have no escapes so not worth it. Also you have built in attack speed boost

-You could either build straight into this or sell the attack speed boots later on for this. Grants much needed Tenacity to improve survival in team fights.

Items that go well with you are tank, attack damage, on hit effects and attack speed.

Just auto attack! Fast attack speeds, Wriggle's Lantern procs and smite grant great gold!

My current path for most junglers is Wolves->Blue->Wraith->Wolves->Red->Golem and free pathing afterwards depending on your health and where you are. Soloing dragon and baron are easy tasks with your built in lifesteal as a passive and attack speed boost. When taking baron whether alone try to avoid the knock ups or else you'll die and embarrass yourself.

Ganking

Most people believe that Warwick's ganks without his ult are weak and won't accomplish anything. I am here to prove you guys wrong. With my experience Warwick is a great ganker, however his ganking style is strange compared to people with crowd control as a normal skill. Warwick relies on Red buff and crowd control from his teammates in the lane to gank. If he has no crowd control from his teammates he will need the enemy to be pushed up really far.

1)Using your ultimate often grants a guaranteed kill as your teammates can easily follow up.

1/9/12-Started Guide
1/15/12-Finished/Published Guide