I find that many people underestimate the power of the tiger stance so this guide will teach you how to take full advantage of it ^^

Pros:
[*] Huge burst damage
[*] Hard to kill
[*] One of the best ganker in the League
[*] Very versatile with the many stances at your disposal

Cons:
[*] Heavy nukes will take you out quickly
[*] Hard to master
[*] Might be under-leveled if you don't know how to jungle correctly

Greater Quintessence of DesolationGreater Mark of Desolation-These will really help take down your enemies fast.These runes are great for almost any Physical DPS!
-Flat armor runes will really help you with early game jungling!
-CDR will really help you with stance dancing(Quickly changing stances to take advantage of your ).

Though this is a tanky dps build,I put 9 into utility because the exp boost is a must have for junglers+you get an increase on the duration of your neutral monster buffs.Reason why I don't add to Defense? You will mainly be focused on DPS for this build.The tankyness is to greatly increase your survival rate and make you that much harder to kill.In my opinion,9 levels into Defense masteries will do little to help with your survival,which is why you have your dodge runes.

-I chose to start off with this for 2 main reasons.The first being the fact that it builds into your first core item, , and the second reason is because the life steal will help you stay in the jungle,which means less wasted time recalling.
-This item greatly speeds up jungling,gives attack,armor,AND life steal! A viable item for any laners and junglers.
-Good synergy for your ,good for getting to your ganks quicker,and good for chasing.
-AD,CDR,and ArP all in one low priced item! However,the reason why I don't upgrade this until the end is because the stat bonuses that you get from Youmoo is not worth the price.
-Udyr takes advantage of practically all of the stat bonuses that this item offers and with the low cool down on your stances,the 150% bonus AD passive will destroy your enemies within seconds.
-This is when the tankyness comes in.You get a huge health bonus and slowing your enemies every hit will make quick work of your enemies when paired with your tiger stance.
Atma's Impaler size-32-Crit,armor,and a nice AD bonus from your health.Great for any off tank.
-If your game does end up lasting this long,upgrading to Youmuu should finish it for you.You are already scary enough once you get all of your items,but once you use the active ability of Youmuu,you're gonna be unstoppable.

I max this first because this will be your main stance and the stance that destroys enemies in seconds.
I put one point into this at level 2 in case I run out of mana and the shield might just save your life if there's an enemy creeping in the jungle.I max this out after
I max this out second because it's Udyr's main ganking skill and the speed boost is never bad for any occasion.
I max this out last because this is usually used as Udyr's offensive stance but I believe that packs a bigger punch.

Jungling order:
[*] Wraith Camp
[*] Wolf Camp
[*] Golem Camp
[*] Blue Golem Camp
[*] Red Lizard Camp(Try getting this before you start ganking.)
Advance to the enemy jungle and repeat ONLY if you have a visual of all enemy champions.
Aim for dragon only after you have both Red and Blue buff and you have at least a Wriggle's Lantern.

Hopefully by the end of this guide you will see that Tiger Udyr makes for a GREAT tanky dps champion.
Vote and Rate please!!! There is always room for improvement!