Passive:

Warwick's basic attacks deal 12 - 46 (+15% bonus Attack Damage) (+10% bonus Ability Power) bonus magic damage. If Warwick is below 50% health, he heals the same amount. If Warwick is below 25% health, this healing triples.

Q:

Warwick lunges forward and bites his target. While the key is held down, he will attach to the target then leap behind them.

On release, deals 120% Attack Damage+90% bonus Ability Power plus 6/7/8/9/10% of your target's maximum health as magic damage (applies On Hit effects). Heal 30/45/60/75/90% of damage dealt.

W:

Passive: Warwick gains 70/80/90/100/110% attack speed against enemies below 50% health. He also senses low health champions globally, moving 35/40/45/50/55% faster toward them when out of combat. These bonuses are tripled against enemies below 20% health.

Active: Warwick briefly senses all enemies. The nearest sensed champion is Blood Hunted for 8 seconds. Cast only while not in combat with a champion.

While no enemies are being hunted, Blood Hunt cools down twice as fast.

E:

Warwick gains 35/40/45/50/55% damage reduction for 2.5 seconds. At the end of the duration, or if activated again, Warwick howls, causing all nearby enemies to flee for 1 second.

R:

Warwick leaps 2.5 seconds worth of movement speed in a direction, suppressing the first champion he collides with for 1.5 seconds. Deals 175/350/525 (+167% bonus Attack Damage) magic damage and applies on-hit effects 3 times. Warwick heals for 100% of all damage he deals during Infinite Duress.

Warwick is a great champion to gank with in the early game due to the passive movement speed he gains from his W. The problem is, that when he doesn't have it and is pre-6, ganks become a lot harder than expected. If this is the case you either want to keep farming, invading or gank from a further angle:

#1. Cover as much terrain as you can before you arrive for the gank. Dont walk straight at the enemy! Circle around them so you have more time to autoattack and less to walk! You can try to be creative with your ganking path after a invade.

#2. Don't let the enemy jump on you to escape when you're ganking. Happens when you gank from behind mostly; don't let Maokai, Pantheon or Renekton dash to you and escape for free. Think about what pathing is the best to gank with. Maybe you could try to hold Q + fear them back into your teammate, but this most likely wont work that often.

#3. Think about when the next minionwave arrives and don't fight in minionwaves that are too big! Even though you're very strong, 15 minions will do a LOT of damage and the enemy might potentially win the game of a gank like that if he uses the minions well. Going out of vision (for example, into a bush that's not warded) resets the aggression from the minions.

#4. Use your W to chase enemies across the map (even invisible enemies are shown!) and use your Smite to cc or to deal more damage, depending on what smite you took.

#5. This point counts for every jungler: wait for enemies to use their escaping tools. For example, if Renekton and Galio don't have their dashes, they will be easier to catch. Look at your laners before the game and decide whether they have some kind of cc that can help you catch the enemy when you gank for them.

#6. But my laners are pushing all the time! Great! Now you can invade, dive the enemy or take an objective. But for real, in higher ranks, people will look at the position and state of the minionwaves before they even walk to gank a lane (e.g. is it pushing or de-pushing).

#7. If something is impossible to gank, don't bother. You will only waste time and possibly throw the game. Focus on other lanes and try to farm up yourself so you atleast have those lanes to help you out. When you've got enough of a lead you can always come back to possibly gank that lane.

#8. Remember to cancel all your basic attacks and with abilities (and Ironspike Whip) so you stack Conqueror or Press The Attack faster and do more damage in a shorter timespan.

Warwick isn't really hard to play but does have a few tricks you can use to your advantage!

#1. You can hold your Q in order to deny CC since you will be unstoppable while you are using the ability. This also works on enemy knockups. You can move along with someone that uses a blink or a dash if you hold your Q while theyre using it if you've timed it correctly.

#2. If you can't kill someone on your own when ganking, you can use your fear and then go through them and release it so they walk towards your team! A feared champion will always run towards the opposite side of the champion its feared from.

#3. You can chain your cc on someone by using your E first and then R him before the fear runs out! Remember that this is not the only way to chain cc though, since you have teammates and can use their cc too. Also don't forget that your fear can be used on multiple enemies so don't get too tunnelvisioned on only one enemy instead.

#4. You don't clear AOE camps (like Raptors) or waves quick enough without Tiamat, so you want to skip those before you have the item.

#5. The range of your R increases with the amount of movement speed your champion has! Items, champion abilities and runes all work with this!

#6. Certain matchups require you to use your Oracle Lense well. For example you can use your Oracle Lense to see Kha'zix or Shaco while he's invisible. This will allow you to hit your fear and R for damage and crowd control.

#7. Smiting camps or objectives earlier will enable your W passive faster so that you can clear the camp or objective a bit faster. Be careful of enemies in the vicinity though when doing this.